question archive Question: We conduct a study to see if the quantity of turkey consumed on Thanksgiving can be used to predict the minutes of sleep that occur after the meal

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Question:

We conduct a study to see if the quantity of turkey consumed on Thanksgiving can be used to predict the minutes of sleep that occur after the meal. We collect data on a sample of people and record the quantity of turkey they consumed (in ounces) and the number of minutes they slept that afternoon. Use the SAS output below to answer the questions that follow. Assume a significance level of 0.05 unless indicated otherwise.

What type of analysis is this?

Simple linear regression

Correlation analysis

Multiple linear regression

Analysis of variance (ANOVA)

Analysis of covariance (ANCOVA)

QUESTION 6

What are the dependent and independent variables?

a.Dependent variable: Sleep time; Independent variable: None

b.Dependent variable: Sleep time; Independent variable: Amount of turkey consumed

c.Dependent variable: Amount of turkey consumed; Independent variable: None

d.Dependent variable: Amount of turkey consumed; Independent variable: Sleep time

e.The designation of dependent variable and independent variable is arbitrary here.

QUESTION 7

What is the appropriate null and alternative hypothesis?

a.

b.

c.

d.

e.

QUESTION 8

Which of the following statements below are correct?

a.Turkey consumption explains 80.9% of the variation in sleep time.

b.Turkey consumption explains 83.8% of the variation in sleep time.

c.Turkey consumption explains 3.2% of the variation in sleep time.

d.Turkey consumption explains 22.3% of the variation in sleep time.

e.Turkey consumption explains 83.4% of the variation in sleep time.

QUESTION 9

How do we interpret the regression coefficient for turkey?

a.For every 1 ounce increase in turkey consumption, sleep duration decreases by 3.2 minutes.

b.For every 1 ounce increase in turkey consumption, sleep duration increases by 83.8%.

c.For every 1 ounce increase in turkey consumption, sleep duration increases by 3.2 minutes.

d.For every 1 ounce increase in turkey consumption, sleep duration increases by 8.1 minutes.

e.For every 1 minute increase in sleep duration, turkey consumption increases by 3.2 ounces.

QUESTION 10

How long would you predict a person would sleep if they consumed 16 ounces of turkey?

a.8.1 minutes

b.22.3 minutes

c.51.0 minutes

d.38.3 minutes

e.59.1 minutes