d. No. The sample sizes are not large enough to assume that the sampling distribution of the difference in sample means is approximately normal.
To estimate the difference between the mean number of days that men and women stay at a hospital, a 95 percent confidence interval is constructed using sample data from each group. We must first evaluate the conditions for inferring a difference between two population means using the difference between two sample means. The conditions that must be met for inference with a confidence interval are:
A random sample is obtained from each population, or the data is available in a properly paired sample form.
The populations from which the samples are drawn must follow a normal distribution, or the sample size is big enough to apply the central limit theorem. Because the sample sizes are big enough for applying the central limit theorem and the samples are obtained randomly, only the third condition is required to evaluate.
The sample sizes are insufficient to ensure that the sampling distribution of the difference in sample means is normally distributed. The difference in sample means can be seen as normally distributed as long as the sample sizes from each population are both 30 or more. The sample size of the males is 12, whereas the sample size of the females is 19, which are both significantly less than 30.
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Carla tutors other students because she likes to be helpful where is Jane tutors classmates strictly for pay their behaviors demonstrate the difference between
A. Primary and secondary drives
B. Instinctive and derived drives
C. Appetitive and aversive motivation
D. Intrinsic an extrinsic motivation
E.positive and negative reinforcement
Answer:A
Explanation:I took the test
The behaviors of Carla and Jane demonstrate the difference between intrinsic and extrinsic motivation. Therefore, the correct option is D.
Intrinsic motivation refers to engaging in a behavior for internal satisfaction or personal interest, while extrinsic motivation involves engaging in a behavior for external rewards or incentives.
Carla's behavior of tutoring other students because she likes to be helpful indicates intrinsic motivation. She finds personal satisfaction and fulfillment in helping others, which serves as an internal reward for her behavior.
On the other hand, Jane tutors her classmates strictly for pay, which indicates extrinsic motivation. Her primary motivation for tutoring is the external reward of monetary compensation.
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a modern handball court is designed with __________ dimensions with a half court line.
A modern handball court is designed with 40m long and 20m wide dimensions with a half court line.
irreversible enzyme inhibitors bind ________ to the enzyme.
The Answer: covalently
True or False: all pure-fruit juices are considered Kosher except grape juice. True grape juice has complications & wine.
After a hurricane waming came across the television, young Eli became terrified of the alarm sound that signaled a severe weather waming. Over the next few months he heard it several times when the "required monthly tests" came on the television, and his fear faded away. One day the alarm sounded and Eli jumped up and ran out of the room. This retum of a previously extinguished response is called ______. a spontaneous recovery b latent learning c. operant conditioning d.second level conditioning
The return of a previously extinguished response is called (a) spontaneous recovery.
Spontaneous recovery is a phenomenon in which behavior that has been previously extinguished is recovered without any further reinforcement. In Eli's case, his fear of the alarm sound decreased over time as he heard the sound during the required monthly tests. However, when the alarm sounded again on the day in question, Eli's fear returned. This phenomenon is an example of spontaneous recovery.
Spontaneous recovery is an important concept in behaviorism. It demonstrates the impact of an individual's environment on their behavior. When an environment changes, so does an individual's behavior. Spontaneous recovery occurs when an environment reverts back to its original state, resulting in the individual's previous behavior.
The concept of spontaneous recovery is distinct from other concepts in behaviorism, such as latent learning, operant conditioning, and second-level conditioning.
Latent learning is learning that occurs without reinforcement, while operant conditioning is learning that occurs through reinforcement. Second-level conditioning is learning that occurs through the association of two stimuli.
While these concepts are related to spontaneous recovery, they are distinct from it.
So, the correct answer is (a).
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true or false. mental rotation activates similar brain regions as performing a physical rotation.
True, mental rotation activates similar brain regions as performing a physical rotation.
What should you know about mental rotation?Mental rotation and physical rotation have been found to activate similar brain regions. Studies using neuroimaging techniques such as functional magnetic resonance imaging (fMRI) have shown that both mental and physical rotation tasks activate the parietal cortex, which is involved in spatial processing and the manipulation of mental images. These findings suggest that mental rotation is not just a cognitive process but also involves the same neural mechanisms as physical rotation.
Physical rotation refers to the actual movement or turning of an object or body part, such as turning a key in a lock or rotating the arm at the shoulder joint.
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A moderate-term goal is one that you hope to accomplish in what time period?a. Two to three monthsb. Six to twelve monthsc. One to five yearsd. Ten to twenty years
A moderate-term goal is one that you hope to accomplish in a period of six to twelve months.
The time frame of six to twelve months allows you to make progress on your goals without being overwhelmed by the amount of time needed to reach them. With a six to twelve month timeline, you can focus on making small incremental changes to reach your desired outcome. This may include breaking down the goal into smaller steps and making progress each week or month. Additionally, it allows you to set achievable milestones to measure progress and success. By setting shorter-term goals, you can build momentum and stay motivated. For example, if you have a goal of losing 15 pounds, you may set a milestone of losing three pounds every month for five months. By setting achievable milestones, you can remain motivated and celebrate small successes as you work towards your overall goal.
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in infants and children, which organ is most severely affected by iodine deficiency? please choose the correct answer from the following choices, and then select the submit answer button. answer choices brain kidneys liver heart
Answer: Brain
Explanation:
You may legally flash your headlights under certain circumstances to get the attention of another driver who may not see you.
True or falase
You may legally flash your headlights under certain circumstances to get the attention of another driver who may not see you. The statement given is true under certain circumstances to alert a driver to your existence.
Headlight flashing is the action of changing your headlights between high and low beams. It's used by drivers to get the attention of other drivers or pedestrians. The high beam is often used to signal other drivers to switch their high beams off in response to another driver's high beams. It's done to ensure that both drivers' visibility isn't compromised by the glare of the other driver's high beams.
Flashing your headlights is only allowed under certain circumstances, according to the law. It's allowed if you need to alert a driver to your existence, such as if they're merging into your lane and don't appear to be aware of your car's presence. It's also permissible to signal to the driver that they should proceed if they're hesitating at an intersection or to indicate that they should slow down or watch for pedestrians, animals, or other hazards on the road. Therefore, the statement "You may legally flash your headlights under certain circumstances to get the attention of another driver who may not see you" is true.
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Alcoholism statistics reveal that a teenager who drinks alcohol before the age of ______ is four times more likely to develop drinking problems than someone who doesn't consume alcohol until they are past 19 years of age.
Alcoholism statistics reveal that a teenager who drinks alcohol before the age of 15 is four times more likely to develop drinking problems than someone who doesn't consume alcohol until they are past 19 years of age.
Alcohol consumption, especially in excess, can cause several short-term and long-term health consequences. It can lead to an array of problems that range from minor health concerns to more significant, life-threatening conditions.
Alcohol abuse is also known as alcoholism or alcohol addiction. It is a chronic disease in which the person consuming alcohol loses the ability to control his or her drinking habits.
The most common health problems due to alcoholism include liver diseases, hypertension, cardiovascular diseases, mental health problems, and cancer.
According to alcoholism statistics, a teenager who drinks alcohol before the age of 15 is four times more likely to develop drinking problems than those who don't consume alcohol until the age of 19.
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what are the signs and symptoms of rheumatoid arthritis and osteoarthritis
The signs and symptoms of rheumatoid arthritis and osteoarthritis are Joint pain and swelling, Morning stiffness, Fatigue, Bone spurs.
Joint pain and swelling: One of the most common symptoms of rheumatoid arthritis is joint pain and swelling. This can occur in any joint in the body, but is most often seen in the hands, wrists, and feet.
Morning stiffness: People with rheumatoid arthritis often experience stiffness in the joints, particularly in the morning or after periods of inactivity. Fatigue: Rheumatoid arthritis can cause extreme fatigue and exhaustion, which can make it difficult to carry out daily activities.
Fever and weight loss: Some people with rheumatoid arthritis may experience a low-grade fever and unintentional weight loss. Numbness and tingling: In some cases, rheumatoid arthritis can cause numbness and tingling in the hands and feet.
Joint pain and stiffness: Osteoarthritis is characterized by joint pain and stiffness, which often worsen with activity. Limited range of motion: People with osteoarthritis may have difficulty moving the affected joint through its full range of motion.
Joint tenderness: The affected joint may be tender to the touch. Grating sensation: Osteoarthritis can cause a grating sensation when the affected joint is moved. Bone spurs: In some cases, osteoarthritis can cause the formation of bone spurs around the affected joint.
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A researcher who stands in a shopping mall and approaches anyone who looks to him likethey would complete a survey is using random sampling.a. True b. False.
A researcher who stands in a shopping mall and approaches anyone who looks to him like they would complete a survey is using random sampling. The given statement is true.
What is random sampling?Random sampling is a method used to select a subset of individuals from a larger population randomly. This sampling method is used in statistical analyses to obtain insights about a population by evaluating the sample's properties.
Random sampling is a statistical technique that involves choosing a sample from a population at random. This means that every member of the population has an equal chance of being chosen as part of the sample.
This method is used to gather data about a particular subject. It reduces bias in the data collected by allowing each individual in the population to have an equal chance of being selected in the sample. It ensures that the sample is representative of the population.
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A ____ is a unit of heat used to measure the energy you body uses and the energy it receives from food.a. mineralb. carbohydratec. calorie
calorie – a unit of heat used to measure the energy your body uses and the energy it receives from food.
Why is there uneven distribution of population in population in Nepal? Give any four reasons
A script is a type of schema that also includes knowledge a. of an experience b. acquired at school c. in episodic memory d. of a sequence of actions
A script is a kind of schema that additionally contains information of an action flow.
A script schema is defined?A script schema is a schema that specifies a series of expected actions to be taken in a specific circumstance or environment. More advancements in schemata were achieved by Swiss psychologist Jean Piaget in 1976. He developed the initial theory of cognitive development that contained schemata.
What is long-term memory's schema?A schema is a key learning tool that is kept in long-term memory and pertains to some essential informational categories and their learning implications, such as generalisation and transfer. With the use of schemas, we can group information according to how we intend to use it.
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Give advantages and side effects of taking zinc tablets. (atleast 3)
Answer:
The consumption of zinc tablets has the potential to confer a number of advantages, such as strengthening the immune system, promoting wound healing and potentially improving cognitive functioning.
However, it is important to be aware of the potential side effects of taking zinc, including nausea and vomiting, copper deficiency, diarrhea and stomach cramps, which may be exacerbated by taking high doses or without food.
A nurse is providing teaching to a client who has a new diagnosis of fibromyalgia. Which of the following statements indicates an understanding of the teaching?
A client with a recent diagnosis of fibromyalgia is receiving instruction from a nurse. Exercise with low impact helps lessen pain attacks.
What sort of diagnostic is that?Clinical diagnosis is one of the various kinds of medical diagnosis and is based on test results, symptoms, and living signs. Rather of taking into account the patient's issues, a laboratory diagnosis is made based on lab test results.
A diagnostic test is what, exactly?a test that uses a person's symptoms and signals to determine what sickness or condition they may have. Moreover, diagnostic tests may be used to generate a prognosis, assess the efficacy of the proposed course of treatment, and plan treatment. Diagnostic tests come in a wide variety of forms.
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In an experimental situation, a student researcher inserts an mRNA molecule into a eukaryotic cell after she has removed its 5' cap and poly-A tail. Which of the following would be expected her to find?
a. the mRNA is quickly converted into a ribosomal subunit
c. the mRNA attaches to a ribosome and is translated, but more slowly.
d. the molecule is digested by enzymes because it is not protected at the 5' end
Explain the choice.
The correct answer about mRNA is (d). The researcher will find that the molecule is digested by enzymes because it is not protected at the 5' end.
The cap structure is a methylated guanine that links to the mRNA via an unusual 5' to 5' triphosphate bond, while the poly-A tail is a series of adenines that are added to the 3' end of an mRNA molecule. The cap and tail are vital for ensuring mRNA stability, mRNA nuclear export, and translation initiation into proteins. When the cap and tail are removed, the mRNA becomes vulnerable to RNases (ribonucleases), which are enzymes that digest RNA.
In summary, the mRNA will not be translated by a ribosome because it lacks a 5' cap, which is required for translation initiation, and it will be rapidly degraded by enzymes because it lacks a poly-A tail.
The researcher would thus expect the mRNA to be destroyed quickly.
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__________ is a disease in which the air spaces distal to the terminal bronchioles are enlarged and their walls are destroyed.
A condition in which the air spaces distal to the terminal bronchioles are enlarged due to overdistension or destruction - bronchogenic - carcinoma dry - pleurisy pleuritis - emphysema
Emphysema is a disease in which the air spaces distal to the terminal bronchioles are enlarged and their walls are destroyed.
Emphysema is a lung disease in which the air sacs in the lungs are damaged and enlarged, causing difficulty breathing. Emphysema is caused by smoking, air pollution, and other factors that irritate the lungs.
The air spaces distal to the terminal bronchioles are enlarged due to overdistension or destruction. This leads to a decrease in the amount of oxygen that can enter the lungs, and difficulty breathing. Emphysema is a chronic, progressive disease that gets worse over time.
There is no cure for emphysema, but treatment can help manage symptoms and improve quality of life. Treatment may include medications, oxygen therapy, and pulmonary rehabilitation.
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how long does it take to become a medical examiner
The specific requirements and timeline may vary depending on the location and the specific position, but generally, it can take at least 12-15 years of education and training to become a medical examiner.
Here are the general steps required:
Earn a Bachelor's degree: A Bachelor's degree in a related field such as biology, chemistry, or forensic science is typically required.
Attend medical school: After completing a Bachelor's degree, aspiring medical examiners need to attend medical school to earn a Doctor of Medicine (MD) or Doctor of Osteopathic Medicine (DO) degree. Medical school typically takes four years to complete.
Complete a residency: After medical school, a medical examiner needs to complete a residency program in forensic pathology. The residency usually takes three to four years to complete.
Obtain a medical license: To work as a medical examiner, you need to obtain a medical license in the state where you plan to practice.
Obtain board certification: Medical examiners can obtain board certification from the American Board of Pathology. This requires passing an exam in forensic pathology.
Overall, the education and training required to become a medical examiner can take at least 12-15 years after completing high school.
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this policy determines what categories of data and information can or should be released pursuant to a request from a third party
The policy determines what categories of data and information can or should be released pursuant to a request from a third party.
Data can be used for analysis, making inferences, and modeling relationships or behaviors of individuals or objects. Data, unlike information, does not have meaning. Data becomes information when it is analyzed, interpreted, or presented in such a way as to convey meaning. What does the policy refer to? The policy is a guideline or rule that determines what categories of data and information can or should be released pursuant to a request from a third party. A third party is someone who is not part of a given organization or group of people, but who has a stake in or is affected by a decision or action taken by that organization or group. A third-party request, for example, might be a request from a member of the public, a government agency, or a court order that seeks access to particular data or information that the organization or group has in its possession. The policy, therefore, specifies the conditions under which such data or information can be released to a third party.
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individuals who have obsessive compulsive disorder (ocd) often feel their obsessions or compulsions are ____.
Individuals who have obsessive-compulsive disorder (OCD) often feel their obsessions or compulsions are uncontrollable.
Obsessive-Compulsive Disorder (OCD) is a severe mental illness characterized by obsessive or compulsive behavior that can be debilitating, persistent, and distressing. A person who has OCD has recurring, unwanted thoughts, sensations, or ideas (obsessions) that make them feel anxious or uncomfortable, as well as repetitive behaviors or rituals (compulsions) that they use to alleviate anxiety or distress.
The obsessions or compulsions in OCD are uncontrollable, irrational, and intrusive. The individual has the impression that the only way to get rid of these distressing and unwanted feelings is to perform a particular act or routine over and over again, often for hours on end.
OCD symptoms may affect your daily activities and social life if they aren't managed or treated properly. OCD is a chronic, lifelong condition that affects people of all ages, genders, ethnicity, and social classes.
However, it is most common in males and females during adolescence or early adulthood. In order to qualify as OCD, obsessions or compulsions must take at least one hour per day and significantly impair the individual's social, professional, or academic functioning.
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what is one set of health benefits you think is important for you or your teenage peers to know are available through marketplace plans?
One set of health benefits that is important for teenagers to know are available through marketplace plans is preventive services.
Preventive services are crucial in maintaining good health and preventing future illnesses or health problems. They include routine checkups, immunizations, screenings, and counseling services. The following are some preventive services that teenagers should take advantage of:
1. Annual wellness exams
Annual wellness exams are important for teenagers to identify potential health problems, monitor growth and development, and receive any necessary vaccinations. During these exams, healthcare providers can offer advice on healthy behaviors, such as exercise and healthy eating habits.
2. Immunizations
Immunizations protect teenagers from a variety of infectious diseases that can lead to serious health problems. These vaccinations include the flu shot, HPV vaccine, and meningococcal vaccine.
3. Mental health services
Mental health services, such as counseling, can help teenagers cope with emotional and mental health problems that can negatively impact their daily lives. Through marketplace plans, teenagers can access these services for free or at a reduced cost.
4. Substance abuse treatment
Substance abuse treatment is important for teenagers who struggle with drug or alcohol addiction. Through marketplace plans, teenagers can receive access to counseling services, support groups, and other resources to help them overcome their addiction.
In conclusion, preventive services are essential for teenagers to maintain good health and prevent future health problems. By taking advantage of these services, teenagers can stay healthy and avoid costly medical expenses in the future.
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What variance in temperature is seen in tropical climates throughout a full year
Tropical climates typically have very little variation in temperature throughout the year.
In fact, the temperature in tropical regions tends to remain relatively constant, with average temperatures typically ranging from 20-30°C (68-86°F) year-round. However, there may be slight variations in temperature between the wet and dry seasons in some tropical regions.
During the wet season, temperatures may be slightly cooler due to increased cloud cover and precipitation, while during the dry season, temperatures may be slightly warmer due to increased sunshine and decreased cloud cover. Nevertheless, the overall variance in temperature in tropical climates is much less than in temperate or polar climates.
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how to relieve herniated disc pain in lower back at home?
Answer:
Explanation:
For mild herniated disc pain, relieve the inflammation to decrease pain. For instance, applying a heating pad or ice pack to the affected area may be a good way to temporarily relieve your pain and reduce inflammation. Take 10-15 minutes twice a day to lie on your stomach with one to two pillows under your hips.Mar 20, 2018
Answer:
For mild herniated disc pain, relieve the inflammation to decrease pain. For instance, applying a heating pad or ice pack to the affected area may be a good way to temporarily relieve your pain and reduce inflammation. Take 10-15 minutes twice a day to lie on your stomach with one to two pillows under your hips.
Explanation:
hope it helps you
The ___ test for estimating vo2 max is based on the principle that your heart rate returns to resting levels after exercise faster when you have a higher level of cardiorespiratory fitness.
1.5 mile run
step cycle ergometer
1-mile walk
The step cycle ergometer test is based on the idea that a higher level of cardiorespiratory fitness causes your heart rate to recover to resting values after activity more quickly.
What is VO₂ max?VO₂ max is a term that stands for maximum oxygen uptake, which is a measure of cardiorespiratory fitness. It is the maximum amount of oxygen your body can absorb and utilize while engaging in intense physical activity. VO₂ max is typically measured during exercise testing and is used to assess a person's cardiovascular health as well as fitness level.
Cardiorespiratory fitness is a measure of how effectively the cardiovascular and respiratory systems work together to deliver oxygen and nutrients to the body's tissues during physical activity. It can be improved through regular aerobic exercises such as running, swimming, or cycling.
The step cycle ergometer test is a method of measuring cardiorespiratory fitness. The test involves pedaling a stationary bike at a predetermined speed and resistance level while wearing a heart rate monitor. The test measures the amount of oxygen your body is consuming and the rate at which your heart rate returns to resting levels after exercise. This information is used to estimate your VO₂ max and your overall cardiorespiratory fitness.
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1.04- Writing Assignment: Two Food Labels-
20 Points
Compare Two Food LabelsReview the nutrition quality of two items that are similar, using what you know about daily values, and ingredients (one of the products must have a health claim). Examples: 2 different cereals, soups, Snacky foods.Write a 300-500 word essay on what you have learned OR create a power point.
iWOULD GIVE 100 POINTS BUT I ONLY HAVE 45 SORRY
For the purpose of the comparison of two similar food items, I have chosen two similar breakfast cereals: Kellogg's Special K Original and Quaker Oats Life Original.
What are the nutritional values of these snacks?Kellogg's Special K Original contains rice, wheat gluten, and wheat. Quaker Oats Life Original contains whole grain oat flour, corn flour, and wheat flour. Both of them contain sugar in common.
Kellogg's Special K Original, has a health claim. The packaging states that the cereal is "low fat" and "a good source of fibre." The nutrition label supports this claim, as the cereal contains only 0.5 grams of fat per serving and 3 grams of fibre per serving.
Both cereals contain a similar amount of protein, with Kellogg's Special K Original containing 2 grams per serving and Quaker Oats Life Original containing 3 grams per serving. Both cereals also contain a small amount of sodium, with Kellogg's Special K Original containing 220 milligrams per serving and Quaker Oats Life Original containing 150 milligrams per serving.
In conclusion, while both cereals are similar, there are some key differences to consider. Kellogg's Special K Original is lower in calories, fat, and sodium, and contains a good amount of fibre. Quaker Oats Life Original has a larger serving size and contains more calories, but also has more protein.
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Practice ActivityIdentifying Components of Classical ConditioningFor each of the following scenarios, identify the UCS, UCR, CS, and CR, as well as any indication of generalization or discrimination. You may need to make inferences about how learning took place.1) Cancer patients often have trouble maintaining good nutrition because they come to associate food with the feeling of nausea. After a while the sight of any food makes them nauseated. Be able to explain how this association was learned.2) By the end of their first month, newborn infants begin sucking when they see the bottle, even before the nipple hits their mouth. Explain how this association is learned.3) My pet cat comes running when she hears the can opener, even if I’m opening a can of corn. What additional principle applies here?
Practice Activity Identifying Components of Classical Conditioning for each of the following scenarios, the UCS, UCR, CS, and CR, as well as any indication of generalization or discrimination.
What is UCS, UCR, CS, CR?
1) In this scenario, the UCS is the feeling of nausea, the UCR is nausea avoidance, the CS is the sight of any food, and the CR is nausea avoidance. This is an example of generalization because the patient has come to associate the feeling of nausea with all kinds of food, not just the one that made them feel nauseous in the first place.
2) In this scenario, the UCS is the nipple of the bottle, the UCR is sucking, the CS is the sight of the bottle, and the CR is sucking. This is an example of discrimination because the infant has learned to associate the sight of the bottle with the nipple and the resulting sucking response.
3) In this scenario, the additional principle that applies is the operant conditioning principle of reinforcement. My pet cat has learned that the sound of the can opener is associated with food and her behavior of running when she hears it is reinforced by the food reward that she receives.
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Why avoiding conflict is not healthy for any relationship?
Avoiding conflict in any relationship is not healthy because it can cause resentment and create an environment of distrust.
When conflict is avoided, the issues that caused the conflict remain undetermined and can lead to further violent passions of wrathfulness and frustration. also, when people avoid agitating issues that are important to them, they aren't suitable to express their passions and requirements, which can lead to a lack of closeness and communication
in the relationship. Eventually, avoiding conflict can lead to a lack of understanding and respect in the relationship, making it delicate to move forward and grow together.
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A food inspector examines 16 jars of a certain brand of jam to determine the percent of foreign impurities. The following data were recorded:2.4 2.3 3.1 2.2 2.3 1.2 1.0 2.41.7 1.1 4.2 1.9 1.7 3.6 1.6 2.3Using the normal approximation to the binomial distribution, perform a sign test at the 0.05 level of significance to test the null hypothesis that the median percent of impurities in this brand of jam is 25% against the alternative that the median percent of impurities is not 25%
The normal approximation to the binomial distribution is given as:
X ~ B(n, p), then it is approximated to a normal distribution such that,
X ~ N(np, np(1-p)) where n is the number of trials, p is the probability of success, and (1-p) is the probability of failure.
The null hypothesis is given as H₀: The median percent of impurities in this brand of jam is 25%.
The alternative hypothesis is given as H₁: The median percent of impurities is not 25%.
The median percent of impurities is given as : (1/2) * (16 + 1) = 8.5.
The following are the number of times the data is above and below 8.5: 2.4 + 2.3 + 3.1 + 2.2 + 2.3 + 3.6 = 16.9 > 8.5. Thus, we have 6 values above the median.
1.2 + 1.0 + 1.7 + 1.9 + 1.6 + 2.3 = 10.7 > 8.5. Thus, we have 6 values below the median.
The total number of signs of observations above the median is given as m₁ = 6.
The total number of signs of observations below the median is given as m₂ = 6
The total number of observations is given as n = 16.
The Z test statistic is given as Z = [min(m₁, m₂) - 0.5]/[√(n/2)] = [min(6, 6) - 0.5]/[√(16/2)]≈ 1.5
Using a normal distribution table, the critical value for α = 0.05 is given as zα/2 = 1.96.
Since |Z| = |1.5| < |1.96|, we accept the null hypothesis that the median percent of impurities in this brand of jam is 25%. Therefore, the sign test at the 0.05 level of significance is not significant enough to reject the null hypothesis.
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