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PIT_PIT [208]
3 years ago
8

A group of researchers analyzed the data of 654 adults from their annual health examination. They aimed to investigate the assoc

iation between the lung function using measure FEV (Forced Expiratory Volume) and height of the participants. Answer the questions below given along with the linear regression output below..
a. Report the estimated regression coefficient for variable height and interpret it in the context of the question using the output above.
b. Construct the 95% confidence interval for the regression coefficient for height and interpret it. The values needed for calculation (the values of estimated regression coefficient and its standard error) are given in the output above. Also, add a brief comment if the confidence interval gives the same conclusion on the significance of the variable height in the regression model as the p-value does. (Use t_652,0.025=1.9637669 for the CI construction.)
c. Shapiro Wilk test on the outcome fev was conducted to check if the variable was normally distributed. With the result given below, what can we say about the normality of the variable? If the result implies that it is not normally distributed, what would be the appropriate remedial approach to it?
Mathematics
1 answer:
Zina [86]3 years ago
5 0

Answer:

the question is too long

Step-by-step explanation:

can you shortened it?

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The windows of a downtown office building are arranged so that each floor has 6 fewer windows than the floor below. If the groun
grigory [225]

Answer:

10

Step-by-step explanation:

This is an arithmetic sequence.  The common difference is -6, and the first term is 52.

a = 52 − 6(n − 1)

When n = 8:

a = 52 − 6(8 − 1)

a = 52 − 42

a = 10

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A 3:5 by 5:5ft mirror is placed in a wooden frame. What is the area of the frame?
Flura [38]

Answer:

19.25

Step-by-step explanation:

because 3.5 ×5.5 is 19.25

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3 years ago
Giving 15 point plz help me
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Answer:

3

Step-by-step explanation:

Looking at the first three values of the table- when the x increases by 1, the y increases by 3.

4 0
3 years ago
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A baseball fan is seated in the upper deck of a stadium 200 feet away from
Mrac [35]

Please find attached to this answer a well labelled diagram of the triangle

Answer:

Approximately 176.6 feet

Step-by-step explanation:

From the question, we are to find the height at which the baseball fan was sitting.

From the attached diagram the height at which the fan was sitting is equivalent to the opposite side of the triangle.

Hence , the appropriate trigonometric function to use to solve this question is the sine function.

Sine = Opposite / Hypotenuse

Opposite is unknown so we refer to it as Y

Hypotenuse = 200feet

While the Angle of depression = 62°

Therefore,

Sine 62° = Y/ 200 feet

Cross multiply

Sine 62° × 200 feet = Y

Y = 176.58951857 feet

Approximately 176.6 feet

Therefore , the height at which the fan is sitting is 176.6 feet

8 0
3 years ago
Find the area, Show steps please
PIT_PIT [208]

Answer:

area = 8.75 ft²

Step-by-step explanation:

area = 1/2bh

area = 1/2(7)(2.5) = 8.75 ft²

8 0
3 years ago
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