The order for the process of Statistcal Method will be Identify the research objective, Collect the data needed to Answer the Research question, Describe the data, and Perform Inference.
For any statistics method, we first must have an objective as to why are we conducting that research. Hence the first process has to be Identifying the research objective.
For any statistical method, samples need to be drawn to conduct statistic tests. This essentially requires data to work with. Hence, Collecting the data needed to Answer the Research question must be the next step.
After data is collected, numerous tests are possible to be performed on any set of data but to select the most appropriate statistic, we need to first understand the nature, range, and limitations of the data. Hence, the net step should be to describe the data.
The last step out of the available step would be to perform the inference since this is the only other step possible from the ones mentioned.
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Multiply (3x +9)(2x - 5)
[tex] {6x}^{2} + -15x + 18x -45[/tex]
hope that helped:)
Step-by-step explanation:
=(3x+9)(2x-5)
=3x(2x-5)+9(2x-5)
=6x²-15x+18x-45
=6x²+3x-45
hope it helps.
Charlotte used a calculator to subtract.
She copied her answers from the display, but her teacher said her answers were wrong! Tell how Charlotte got each wrong answer.
1. 204.59 – 23.67 = 0.92
2. 936.4 – 15.85 = 77.79
3. 56.3 – 27.04 = 19.26
Answer:
Step-by-step explanation:
1. She omitted the 0 from the minuend, entering 24.59 instead of 204.59
2. She misplaced the decimal point of the minuend, entering 93.64 instead of 936.4
3. She typed 4 instead of 5 in the minuend, entering 46.3 instead of 56.3
When converting 6/81 into a decimal which is true.
Answer:
6/8 as a decimal is 0.75.
Write the fraction in lowest terms.
14/37
Answer:
14/37
Step-by-step explanation:
14/37 is already in the simplest form. It can be written as 0.378378 in decimal form (rounded to 6 decimal places).
Steps to simplifying fractions
Find the GCD (or HCF) of numerator and denominator
GCD of 14 and 37 is 1
Divide both the numerator and denominator by the GCD
14 ÷ 1
37 ÷ 1
Reduced fraction:
14/37
Therefore, 14/37 simplified to lowest terms is 14/37.
Solve 5x -2.5 = 17.5
Answer:
x=4
Step-by-step explanation:
5x-2.5=17.5
5x=17.5+2.5
5x=20
x=20/5
x=4
The solution of the given equation is x=4
What does it mean to solve an equation?An equation represents equality of two or more mathematical expression.
A mathematical equation is a statement with two equal sides and an equal sign in between. An equation is, for instance, 4 + 6 = 10. Both 4 + 6 and 10 can be seen on the left and right sides of the equal sign, respectively.
Solutions to an equation are those values of the variables involved in that equation for which the equation is true.
We are given the equation as;
5x-2.5=17.5
Solving for x;
5x=17.5+2.5
5x=20
x=20/5
x=4
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A flower bed has the shape of a rectangle 8 yards long and 3 yards wide. What is its area in square feet?
Answer:
the answer is 216 square feet because if you multiply 8 ×3=24 and 24×9=216.
234235342421323254123+323546534311234
Answer:
I gotchu.
Step-by-step explanation:
234235342421323254123+323546534311234 = 2.34235666E20
Have a good day! :)
1. Show that
(10a + 5)^2 = 100a(a + 1) + 25,
for every a real number. How is this formula explaining the rule we have, to square a number
which ends in 5, such as
25^2 = 625, 35^3 = 1225, 105^2 = 11025^2, etc. ?
Answer:
(10a+5)²= 100 a( a+1) + 25
Step-by-step explanation:
Explanation:-
Given
(10a+5)²
By using (a+b)² = a² +2ab +b²
= (10a)²+ 2 × 10a× 5 + (5)²
= 100a² + 100a + 25
= 100 a( a+1) + 25
Write the sentence as an equation.
251 is equal to m reduced by 119
Answer: 251=m-119
Step-by-step explanation:
251=m-119 There is nothing to explain.
The branch manager of an outlet (Store 1) of a nationwide
chain of pet supply stores wants to study characteristics of her
customers. In particular, she decides to focus on two variables: the
amount of money spent by customers and whether the customers
own only one dog, only one cat, or more than one dog and/or cat.
The results from a sample of 70 customers are as follows:
Amount of money spent: X = +21.34, S = +9.22.
Thirty-seven customers own only a dog.
Twenty-six customers own only a cat.
Seven customers own more than one dog and/or cat.
Construct a 95% confidence interval estimate for the
population mean amount spent in the pet supply store.
Construct a 90% confidence interval estimate for the population proportion of customers who own only a cat.
The branch manager of another outlet (Store 2) wishes to conduct
a similar survey in his store. The manager does not have access to
the information generated by the manager of Store 1. Answer the
following questions:
c. What sample size is needed to have 95% confidence of
estimating the population mean amount spent in this store
to within { +1.50 if the standard deviation is estimated to
be $10?
d. How many customers need to be selected to have 90% confidence of estimating the population proportion of customers who own only a cat to within {0.045?
e. Based on your answers to (c) and (d), how large a sample should the manager take?
Answer:
1. ( 19.1416, 23.5384,)
2. (0.276348, 0.46651)
3. the sample size = 170.73 approximately 171
4. sample size = 334.07 approximately 334
5. sample of 334 should be taken by manager
Step-by-step explanation:
mean = bar x = 21.34 dollars
size of sample n = 70
standard deviation of sample = 9.22
we use t distribution as the population standard deviation is not known.
95% Confidence interval
1-α = 0.95
α = 0.05
degree of freedom = 70-1 = 69
α/2 = 0.025
using the t distribution tsble,
= 1.9949
confidence interval = [tex]21.34+-1.9949*[\frac{9.22}{sqrt(70)}] \\[/tex]
= 21.34 +- (1.9949*1.10200)
= 21.34 + 2.1984, 21.34 - 2.1984
= (23.5384, 19.1416)
the confidence interval of the mean amount spent at the supply store can be written as 19.1416<u<23.5384
2. sixe of those who only have a cat
p = 26/70 = 0.371429
at 90 % confidence interval,
1-α = 0.90
α = 0.10
we use the z table here
z(0.10/2) = Z(0.05)
= 1.645
[tex]0.371429+-1.645\sqrt} \frac{0.371429(1-0.371429)}{70}[/tex]
= 0.371429 +-( 1.645 x 0.0578)
= 0.371429 + 0.095081, 0.371429 - 0.095081
= (0.276348, 0.46651)
3. sd = 10$
margin of erro,r e = 1.50$
α = 0.05
using z table
α/2 = Z0.025
= 1.96
sample size = 1.96² * 10² / 1.50²
= 3.8416 * 100/ 2.25
= 170.73
the sample size is approximately 171
d. we have 0.5 as sample proportion now
margin of error = 0.045
α = 0.10
Zα/2 = 0.05
= 1.645
sample size = 1.645²x0.5(1-0.5) / 0.045²
= 0.676506/0.002025
= 334. 07
sample size = 334
5. sample of 334 should be taken by manager
Find the lateral area of a rectangluar prism with ?
Answer:
40 Squared units
Step-by-step explanation:
[tex]A=2*2*4+2*2*6=40[/tex]
which lists the multiple of 8 A. 8,16,24, 46 B.8,16,24,48 C.8,15,32,50 D.8,16,40,63
B. 8, 16, 24, 48
pls mark brainliest if helped c:
Is these true or false help out
Answer:
1. False
2. True
Step-by-step explanation:
1. 3v [tex]\geq[/tex] 60
3(10) [tex]\geq[/tex] 60
30 [tex]\geq[/tex] 60
2. x + 18 < 32
2 + 18 < 32
20 < 32
Answer:
I have attached a picture of me solving it. Hope this helps, thank you !!
What is the opposite of 56?What is the value of –(-4)?
Answer:
-56;+4
Step-by-step explanation:
56 oopposite is -56
-(-4)=+4
THIS IS A MULTIPLE CHOICE QUESTION!
Corey, Billy, and Shea own a house repair and update business. The number of hours that each person spent painting and doing repair work on the same house is listed below.
• Corey: 4.25 hours
• Billy: 7.75 hours
• Shea: 10.5 hours
They earned a total of $1,100 for the job and put 25% of the money earned in an account for future expenses. If they divide the money proportionally based on the number of hours each worked, how much money did Shea receive?
A.$385
B.$412.50
C.$413.33
D.$641.77
Please show ALL of your work.
Answer:
The correct answer is A. $385.
Step-by-step explanation:
Since Corey, Billy, and Shea own a house repair and update business, and the number of hours that each person spent painting and doing repair work on the same house is listed below.
• Corey: 4.25 hours
• Billy: 7.75 hours
• Shea: 10.5 hours
And since they earned a total of $ 1,100 for the job and put 25% of the money earned in an account for future expenses, to determine how much money Shea received if they divided the money proportionally based on the number of hours each worked is owed perform the following calculation:
1100 x 0.75 = 825
10.5 + 7.75 + 4.25 = 22.5
22.5 = 100
10.5 = X
10.5 x 100 / 22.5 = X
1050 / 22.5 = X
46.666 = X
825 x 0.4666 = X
384.99 = X
Therefore, Shea received $385.
HELP PLEASE!! thanks
Answer:
352
but for the 3 it would be 264
If five times the square of a certain positive number is
decreased by twice the number, the result is 16. Find the
number [Only an algebraic solution will be accepted.]
Answer:
5 bud i think it this but i might be wrong
1. Each letter in VALENTINE is written on a separate piece of paper and put into a bag.
You randomly choose a piece of paper from the bag. Find the probability of choosing an
E
Answer:
2/9
Step-by-step explanation:
two e with a total of 9 letters
Which of the following measures could be used to make triangle?
2,9, 12
4,4,7
3,5,8
3,5,8. I think.
have a great day :)
Write the system of equations in slope intercept form.
Show ALL of your work!
y + 2x = 0
2y = -2 - 6
what is 99+44+44+44+$4+44+$4+44+44+44 = and my zodiac is pisces what about your guys zodiac
Answer:
415
Step-by-step explanation:
Mine is Capricorn
Answer:
I'm a September Libra
When 5 randomly selected people all have the same birth month of March.
Answer:
I know 4 people that are all really close friends and all have birthdays in march.
Step-by-step explanation:
Find the total surface area of a rectangular prism with ?
Answer:
88 Squared units
Step-by-step explanation:
[tex]A=2*6*4+2*4*2+2*6*2=88unit^{2}[/tex]
what is the value of y?(PLEASE ANSWER QUICKLY!!
5/16y=5/24
a.1/2
b.1/3
c.3/2
d.2/3
Answer:
The answer is D. 2/3
Step-by-step explanation:
We have to find out what number times 5/16 will equal 5/24. This isolates y.
You can plug in all the answers.
5/16 times 2/3 equals 5/24 which is the answer!
Answer:
D.2/3
Step-by-step explanation:
Luis wants to buy a skateboard that usually sells for $79.08. All merchandise is discounted by 12%. What is the total cost of the skateboard if Luis has to pay a state sales tax of 6.75%. Round your intermediate calculations and answer to the nearest cent.
Answer:
$74.96
Step-by-step explanation:
$79.80 × 0.12 = 9.576 (discount)
$79.80 - $9.576 = $70.224
$70.224 × 0.0675 = 4.74012 (add for sales tax)
$70.224 + $4.74012 = $74.96412
Interest of 200 million dollars 53% and 22 years will give brainliest to correct answer
Answer:
$2,313,150,687,166.22 is the interest accrued.
Step-by-step explanation:
Hope this helps
Answer:
$2,313,150,687,166.22 is the interest
Step-by-step explanation:
hope this helps.
Round The Following Number: 194,332.125
Answer:
The answer is 194000
Step-by-step explanation:
It is closer to 194000 than 195000
Let FICA tax rates be 7.65% on the first $127,200 of income from wages, and 1.45% on any income from wages in excess of $127,200. Her FICA tax is?
Answer:
The tax is split between employers and employees. They both pay 7.65% (6.2% for Social Security and 1.45% for Medicare) of their income to FICA, the combined contribution totaling 15.3%. The maximum taxable earnings for employees as of 2020 is $137,700.
Correct me if you want If its wrong
What are the coordinates of the x-intercept of the line 3x - 2y = 12?
Answer:
(4,0)
Step-by-step explanation:
what times 4/5 equals 3/4
Answer:
15/16
Step-by-step explanation:
4/5 x=3/4
x=(3/4)/(4/5)
x=15/16