It is well documented that active maternal smoking during pregnancy is associated with​ lower-birth-weight babies. Researchers wanted to determine if there is a relationship between paternal smoking habits and birth weight. The researchers administered a questionnaire to each parent of newborn infants. One question asked whether the individual smoked regularly. Because the survey was administered within 15 days of​ birth, it was assumed that any regular smokers were also regular smokers during pregnancy. Birth weights for the babies​ (in grams) of nonsmoking mothers were obtained and divided into two​ groups, nonsmoking fathers and smoking fathers. The accompanying data are representative of the data collected by the researchers. The researchers concluded that the birth weight of babies whose father smoked was less than the birth weight of babies whose father did not smoke.

Nonsmokers Smokers
4194 3522 3454 3998 3455 3066
3062 3771 3783 3150 2986 2918
3544 3746 4019 4216 3502 3457
4054 3518 3884 3493 3255 3234
4248 3719 3668 2860 3282 2746
3128 3290 3423 3686 2851 3145
3471 4354 3544 3807 3548 4104
3994 2976 4067 3963 3892 2768
3732 3823 3302 3769 3509 3629
3436 3976 3263 4131 3129 4263

a. Is this an observational study or a designed experiment? Why?
b. What is the explanatory variable? What is the response variable?
c. Can you think of any lurking variables that may affect the results of the study?
d. In the article, the researchers stated that "birthweights were adjusted for possible confounders …." What does this mean?
e. Determine summary statistics (mean, median, standard deviation, quartiles) for each group.
f. Interpret the first quartile for both the nonsmoker and smoker group.
g. Draw a side-by-side boxplot of the data. Does the side-by-side boxplot confirm the conclusions of the study?

Answers

Answer 1

Answer:

b. Use an AD/AS diagram to show how a decrease in the inflation target can keep inflation and short-run output from starting to rise in 2021. Explain your diagram and what it reveals about monetary policy.

Answer 2

Answer:

938583

Step-by-step explanation:


Related Questions

PLEASE HELP me with the magic square

Answers

Fill in each slot in the square with variables a, b, c, d, and e, in order from left-to-right, top-to-bottom. In a magic square, the sums across rows, columns, and diagonals all add up to the same number called the magic sum.

The magic sum is -3.9, since "diagonal 2" (bottom left to top right) has all the information we need:

3 + (-1.3) + (-5.6) = -3.9

Use this to find the remaining elements

row 1:

a + b + (-5.6) = -3.9

row 2:

c + (-1.3) + d = -3.9

row 3:

3 + e + 0.02 = -3.9

column 1:

a + c + 3 = -3.9

column 2:

b + (-1.3) + e = -3.9

column 3:

(-5.6) + d + 0.02 = -3.9

diagonal 1 (top left to bottom right):

a + (-1.3) + 0.02 = -3.9

You will find

a = -2.62

b = 4.32

c = -4.28

d = 1.68

e = -6.92

What is the median of the following numbers?
8,10,8,5,4,7,5,10,8

Answers

Answer:

the answer is 4

Step-by-step explanation:

Answer:

the median is 7

Step-by-step explanation:

to find the median you need to find the highest number in value and then find the lowest number in value. The median is the middle value.

Which statement is true? Question 10 options: A) |13| = – 13 B) – |13| = 13 C) |–13| = 13 D) – |–13| = 13

Answers

Answer:

The answer is C

Step-by-step explanation:

Every negative or positive number in the modulus while be positive at the end

The true statement is C) |–13| = 13, indicating that the absolute value of -13 is 13, representing the distance of -13 from zero on the number line.

How to Solve Absolute Value Equations?

The true statement is: C) |–13| = 13, as explained below.

The expression |–13| represents the absolute value of -13, which is the distance of -13 from zero on the number line, always resulting in a non-negative value.

|–13| = 13, because the absolute value of -13 is 13, meaning it is 13 units away from zero on the number line. So, the correct option is C) |–13| = 13.

Learn more about Absolute Value on:

https://brainly.com/question/12928519

#SPJ6

Please help.

Best answer will get brainliest.

Answers

Answer:

59.1 for the mean

Step-by-step explanation:

You add all the numbers together and divde it by the amount of numbers there are.

Answer:

Mean= 59.1

Median= 58

Range= 11

Step-by-step explanation:

Mean= Total data/Number of given datas

        = 60+58+54+56+63+65+62+59+56+58/10

Mean = 591/10= 59.1

Median= Middle value

            = 65, 63, 62, 60, 59, 58, 58, 56, 56, 54

Median= 58

Range= Highest value- Lowest value

           = 65-54

Range= 11

The amplitude of y= – sin is
b 0
C2
d 1

Answers

Answer:

  d.  1

Step-by-step explanation:

The amplitude of such a function is the magnitude of the coefficient of the sine function.

  |-1| = 1 . . . . the amplitude . . . matches choice D

5lb 7oz -11oz need help quick​

Answers

Answer:

76 ounces

Step-by-step explanation:

I'm assuming you meant:

5lb+7oz-11oz=

16 ounces in a pound

5lb+7oz-11oz=

80+7-11=

87-11=

76 ounces

A cylindrical tank is half-full of oil. The cylinder has base radius of 100cm.The height of the cylinder is 250cm. 1 litre =1000cm cubed
How many litres of oil are in the tank? Round your answer to the nearest litre.

Answers

Answer:

Step-by-step explanation:

area of a cylinder=. V=πx r^2xh

so...

πx100^2x125=3926990.817 (the height is 125 because only half of it has oil)

3926990.817/1000=3927litres

what is the number that has the same value as l6l

Answers

Answer:6

Step-by-step explanation: Moving two bars to the edge of 6 will result in 6.

Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification: freshmen 83, sophomores 68, juniors 85, and seniors 64. The school superintendent is interested in determine whether there has been a significant change in the classification between last school year and this school year.

Deteremine the correct null hypothesis for this problem

Answers

Find the given attachment

A student used f(x) = 5.00(1.012)* to show how the balance in a savings account will
increase over time. What does the 5.00 represent?

Answers

Answer:

  the initial balance

Step-by-step explanation:

5.00 is the value of f(0). It is the balance before any time has elapsed, the initial balance.

Please Help With problem 1

Answers

Answer:

60

Step-by-step explanation:

To find the volume of a rectangular prism you need to use the formula Base times height or  in this case  length times-width times height so multiply  5 x 4 x 3 to get your answer

If you were to roll a six-sided number cube 60 times, about how many times would you expect the number cube to land on a 1?

Answers

Answer:

10

Step-by-step explanation:

Probability is the likeliness of happening of an event.

Probability of any event A can be be defined by

no. of time event A happens/ total no. all possible  event that can occur

___________________________________

In the problem

probability of occurrence of 1 on rolling a cube is needed.

A cube has six sides with one written on one sides and rest has 2,3,4,5,6.

No of times 1 can occur on rolling the dice once will be = 1

Since there six sides and and each has different number (1,2,3,4,5,6)

There is chance that each of the number can come.

Thus, total no possible outcome = 6

Probability of occurrence of 1 = No of times 1 occurs on rolling the dice /total no possible outcome    = 1/6

_____________________________________________

If dice is rolled 1 time there is 1/6 chance that 1 will be the outcome.

If dice is rolled 1*60 time then there is 1/6*60= 10 chance that 1 will be the outcome

Thus , If you were to roll a six-sided number cube 60 times, about 10  times it is  expected that  the number cube to land on a 1.

Answer:

20

Step-by-step explanation:

ASAP! GIVING BRAINLIEST! Please read the question THEN answer correctly! No guessing.

Answers

Answer:

x > 5

Step-by-step explanation:

Subtract 7 from both sides, like so:

x + 7 > 12

  - 7      - 7

________

x > 5

A fenced enclosure consists of a rectangle (length L and width 2R) attached to a semicircle with a radius R as pictured below. Note: there is fencing between the rectangular and semi-circular portions. The enclosure is to be built to have a total area (the entire shaded region), A, of 2000 ft2. The cost of the fence is $20/ft for curved sections and $30/ft for straight sections. Analytically (show all of your steps using algebra and calculus in the write up), find the minimum cost to build the fence and the dimensions of the enclosure. Show all equations that you derive and use. This part should be done entirely in the write-up: no coding. It is fine to do this by hand and include a high-resolution picture in the writeup rather than using Equation Editor. Hint: you will need to use two equations in order to find the cost as a function of only R or L. Construct a plot to graphically determine the values of R and L (x-axis) that minimize the total cost (y-axis) of the fence. Using the MIN function, determine the R and L that minimize cost and what that cost is Do your answers in A, B and C all agree? Why or why not?

Answers

Answer:

A. $ 6053.44

B. From the graph, R = 21.027 ft and C = $ 5700.005, L = 31.043 ft

The values in A and B do not all agree. This could be due to error in approximations. Their values are close though.

Step-by-step explanation:

A. The area A of the enclosure equals, A = 2RL + πR²/2.

The total cost C = 20 × length of curved section + 30 × length of straight section

C = 20πR + 30[2(L + 2R)]

   = 20πR + 60L + 120R

Making L subject of the formula from A,

L = A/2R - πR/4

Substituting L into C, we have

C = 20πR + 60(A/2R - πR/4) + 120R

   = 20πR + 30A/R - 15πR + 120R

   = 5πR + 30A/R + 120R

We now differentiate C with respect to R to find the value of R for minimum cost

dC/dR = 5π - 60A/R² +120

Equating dC/dR to zero, we have

5π - 60A/R² + 120 = 0

So, R = ±√[60A/(5π + 120)]

substituting A = 2000 ft²

R = ±√[60 × 2000/(5π + 120)] = ±29.74 ft

We take the positive answer, R = 29.74 ft since R cannot be negative.

To determine if this is a minimum point, we differentiate dC/dR with respect to R.

So d²C/dR² = 120A/R³

Since d²C/dR² = 120A/R³ > 0 for positive R, it is a minimum point.

Substituting the value of R into C we have

C = 5πR + 30A/R + 120R

   = 5π(29.74) + 30 × 2000/29.74 + 120(29.74)

   = 467.155 + 2017.485 + 3568.8

   = $ 6053.44

and L = A/2R - πR/4

         = 2000/2(29.74) - π(29.74)/4

         = 33.625 - 23.356

         = 10.269

         ≅ 10.27 ft

B. From the graph, R = 21.027 ft and C = $ 5700.005, L = 31.043 ft

The values in A and B do not all agree. This could be due to error in approximations. Their values are close though.

b. David and Andrew are traveling to a Mathematics conference. David travels 110 miles in the same time that Andrew travels 140 miles. Andrew travels 15 miles per hour faster than David. Find the average rate of each person.

Answers

Answer:

Its 14 and 19

Step-by-step explanation:

Answer:

b. About 15 miles

Step-by-step explanation:

got it right on edge

How to solve #2 if you don’t know any of the side lengths?? (We’re learning about Pythagorean Theorem)

Answers

Answer:

Applying Pythagorean theorem in right triangle with c is longest side and a, b are the other sides:

=> c^2 = a^2 + b^2

=> a^2 = c^2 - b^2

=> b^2 = c^2 - a^2

Hope this helps!

:)

Answer:

c² = a² + b²

a² = c² - b²

b² = c² - a²

find the slope of the line passing through the points (6,9) and (6, -1)

Answers

Answer:

Undefined

Step-by-step explanation:

M=undefined

Slope = y2-y1 /x2- x1

=9 -(-1). / 6-6

= 10/0 = infinity ; undefined

An above-ground swimming pool is 5 feet long, 4 feet wide, and 3 feet deep and is shaped like a rectangular prism. A rectangular prism has a length of 5 feet, height of 3 feet, and width of feet. If you use a net to find the amount of material used to make the pool, what faces are included in the calculation?

Answers

Answer:

  the faces representing the sides and bottom of the pool are included

Step-by-step explanation:

Obviously, there is no pool material covering the top of the pool. Rather, it is "an open-top box", so the area of the faces of the box does not include the area of the top. The five faces other than the top face are included.

Answer:

First answer is 1

Second is 2

Third is 2

If you make $ 18,720 a year what is your monthly wage ?

Answers

Answer:

1,560.00 per month

Answer:

1,560

18,720/12 months in a  year = 1,560 per month

hope this helps

Step-by-step explanation:

Sherri hikes on the Pacific Coast trail. She plans to hike 3.72 miles. If she hikes at an average speed of 1.2 miles per hour, how long will she hike?

Answers

Answer:

3.1 hours

Step-by-step explanation:

Average Speed=Distance Traveled ÷ Time Taken

Sherri plans to hike 3.72 miles  at an average speed of 1.2 miles per hour.

Average Speed=1.2 miles per hour.Distance =3.72 miles

Therefore:

1.2 miles per hour=3.72 miles ÷ Time

1.2 miles per hour X Time=3.72 miles

Time = 3.72 ÷ 1.2 hours

Time taken by Sherri=3.1 hours

Sherri will hike for 3.1 hours.

What is the y-value when x equals - 12?
y = -200 - 6(x)
Enter the correct answer

Answers

Answer:

y = -6x - 200

Step-by-step explanation:

Add. Enter your answer in scientific notation.
2.25 x
108 +3.50 x 108 +2.25 x 108 =

Answers

Answer:

  8×10⁸

Step-by-step explanation:

2.25×10⁸ +3.50×10⁸ +2.25×10⁸ = (2.25 +3.50 +2.25)×10⁸ = 8×10⁸

__

Your calculator can do this for you and display the result in scientific notation.

What is the volume, in cubic cm, of a rectangular prism with a height of 19cm, a
width of 16cm, and a length of 8cm?

Answers

Answer: 2432

19 x 16 x 8 = 2432

Answer: 2,432 cm³

Step-by-step explanation: To find the volume of a rectangular prism or a prism whose base is a rectangle, we use the formula below.

Volume = length × width × height

Since the rectangular prism has a length of 8 centimeters, a width of 16 centimeters, and a height of 19 centimeters,

we can plug this information into the formula to get

(8 cm)(16 cm)(19 cm).

This gives us 2,432 cm³.

So the volume is 2,432 cm³.

in the year 2005 a company made $6.6 million in profit for each consecutive year after that their profit increase by 9% how much would a companies profit be in the year 2009 to the nearest 10th of $1 million

Answers

Answer:

$9.3 million

Step-by-step explanation:

Given that the company profit increases by 9% yearly from 2005.

Using the exponential growth formula;

A = P(1+r)^(t) .....1

Where;

A = final amount/value of profit

P = initial amount/value = $6.6 million

r = growth rate yearly = 9% = 0.09

t = time of growth in years = 2009 - 2005 = 4 years

Substituting the values;

A = 6.6(1+0.09)^(4)

A = 6.6(1.09)^(4)

A = 9.3164386 million

A = $9.3 million

The companies profit in the year 2009 to the nearest 10th of $1 million is $9.3 million

a cartographer used a scale of 1 inch :300 meters for the heights of different mountains if the actual height of one of those mountains is 3700 meters high. what is the height on the map?​

Answers

Answer:

[tex]12\frac{1}{3}[/tex] inches

Step-by-step explanation:

So to go from 300 to 3700 you have to multiply by [tex]12\frac{1}{3}[/tex]

The mean temperature for the first 7 days in January was 4 °C.
The temperature on the 8th day was 4 °C.
What is the mean temperature for the first 8 days in January?

Answers

Answer:

4 degrees Celsius

Step-by-step explanation:

Since the mean is (total/amount), we can remake this to get That mean*amount=total. For the first 7 days, 4*7=28 for our total, and add that to the 8th day to get 32 for our total. 32/8=4 for our mean for the first 8 days of january

Answer:

Answer:

4 degrees Celsius

Step-by-step explanation:

Since the mean is (total/amount), we can remake this to get That mean*amount=total. For the first 7 days, 4*7=28 for our total, and add that to the 8th day to get 32 for our total. 32/8=4 for our mean for the first 8 days of january

Find the value of x.

Answers

Answer:

x = 61

Step-by-step explanation:

x and 29 are complementary angles  so they add to 90 degrees

x+29 = 90

Subtract 29 from each side

x+29-29 = 90-29

x = 61

Answer:

61 degrees = x

Step-by-step explanation:

Since angle measures x and 29 are complementary angles, subtract 29 from 90 degrees.

90 - 29 = 61 degrees is the value of x

Batman, who is having a slow year for crime, has resorted to saving cats from very tall buildings. Our fearless 6 foot tall hero is 40 feet from the the Petsmart building the cat was trying to break in to, in order to get his paws on the pumpkin spice cat nip. Batman sights the top of the building at a 30° angle, how high is the building?

Answers

Answer:

29.094 feet tall

Step-by-step explanation:

tan(30) = [tex]\frac{x}{40}[/tex]

so tan is opposite over adjacent which means that we should be able to solve for the opposite as we have the angle (30) and the distance from Batman to to building, which is (40 feet), with these numbers you will do, tan(30) = [tex]\frac{x}{40}[/tex] and from that you will solve for x, and from x you add the 6 foot of batmans height

What does X equal?? Please help me out!!

Answers

X = 80 + 20 = 100 degrees

Jamie spent $12 dollars a day on food for 6 days. What was Jamie’s overall change in her bank account for food over the 6days?

Answers

Answer:

-72

Step-by-step explanation:

12 * 6 = 72

Jaime spent 72 dollars for the 12 days

It went down because the money was spent

-72

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