Question 1

SCENARIO 13-2  
-Referring to Scenario 13-2, if the price of the candy bar is set at $2, the estimated mean sales will
Be

Accepted Answer

A)  30 
B)  65 
C)  90 
D)  100 
A)  30 
B)  65 
C)  90 
D)  100

Question 2

SCENARIO 13-5
The managing partner of an advertising agency believes that his company's sales are related to the
industry sales.He uses Microsoft Excel to analyze the last 4 years of quarterly data with
the following results:   Durbin-Watson Statistic 1.59
-The standard error of the estimate is a measure of

Accepted Answer

A)  total variation of the Y variable. 
B)  the variation around the sample regression line. 
C)  explained variation. 
D)  the variation of the X variable. 
A)  total variation of the Y variable. 
B)  the variation around the sample regression line. 
C)  explained variation. 
D)  the variation of the X variable.

Question 3

Which of the following assumptions concerning the probability distribution of the random error
Term is stated incorrectly?

Accepted Answer

A)  The distribution is normal. 
B)  The mean of the distribution is 0. 
C)  The variance of the distribution increases as X increases. 
D)  The errors are independent. 
A)  The distribution is normal. 
B)  The mean of the distribution is 0. 
C)  The variance of the distribution increases as X increases. 
D)  The errors are independent.

Question 4

True or False: The coefficient of determination represents the ratio of SSR to SST.

Accepted Answer

A) True 
 B)False

Question 5

Accepted Answer

Question 6

SCENARIO 13-2  
-Referring to Scenario 13-2, what is the standard error of the regression slope estimate, Sb1 ?

Accepted Answer

A)  0.784 
B)  0.885 
C)  12.650 
D)  16.299 
A)  0.784 
B)  0.885 
C)  12.650 
D)  16.299

Question 7

True or False: Data that exhibit an autocorrelation effect violate the regression assumption of
independence.

Accepted Answer

A) True 
 B)False

Question 8

SCENARIO 13-3
The director of cooperative education at a state college wants to examine the effect of cooperative
education job experience on marketability in the work place.She takes a random sample of 4
students.For these 4, she finds out how many times each had a cooperative education job and how
many job offers they received upon graduation.These data are presented in the table below.  
-Referring to Scenario 13-3, set up a scatter plot.

Accepted Answer

The answer of SCENARIO 13-3
The director of cooperative education at...

Question 9

SCENARIO 13-3
The director of cooperative education at a state college wants to examine the effect of cooperative
education job experience on marketability in the work place.She takes a random sample of 4
students.For these 4, she finds out how many times each had a cooperative education job and how
many job offers they received upon graduation.These data are presented in the table below.  
-Referring to Scenario 13-3, the director of cooperative education wanted to test the hypothesis
that the population slope was equal to 3.0.The value of the test statistic is ________.

Accepted Answer

The answer of SCENARIO 13-3
The director of cooperative education at...

SCENARIO 13-2 -Referring to Scenario 13-2, if the price of the candy bar is set at $2, the estimated mean sales will Be

Which of the following assumptions concerning the probability distribution of the random error Term is stated incorrectly?

True or False: The coefficient of determination represents the ratio of SSR to SST.

SCENARIO 13-2 -Referring to Scenario 13-2, what is the standard error of the regression slope estimate, Sb1 ?

True or False: Data that exhibit an autocorrelation effect violate the regression assumption of independence.

Defining and Collecting Data

Organizing and Visualizing

Numerical Descriptive Measures

Basic Probability

Discrete Probability Distributions

Conthe Tinuonormausl Disdis Tributionstribution and Other

Sampling Distributions

Confidence Interval Estimation

Fundamentals of Hypothesis Testing: One-Sample Tests

Two-Sample Tests

Analysis of Variance

Chi-Square and Nonparametric

Introduction to Multiple

Multiple Regression

Time-Series Forecasting

Business Analytics

A Roadmap for Analyzing Data

Statistical Applications in Quality Management

Decision Making

Filters

Exam 13: Simple Linear Regression

SCENARIO 13-2 -Referring to Scenario 13-2, if the price of the candy bar is set at $2, the estimated mean sales will Be

Which of the following assumptions concerning the probability distribution of the random error Term is stated incorrectly?

True or False: The coefficient of determination represents the ratio of SSR to SST.

SCENARIO 13-2 -Referring to Scenario 13-2, what is the standard error of the regression slope estimate, Sb1 ?

True or False: Data that exhibit an autocorrelation effect violate the regression assumption of independence.

Defining and Collecting Data

Organizing and Visualizing

Numerical Descriptive Measures

Basic Probability

Discrete Probability Distributions

Conthe Tinuonormausl Disdis Tributionstribution and Other

Sampling Distributions

Confidence Interval Estimation

Fundamentals of Hypothesis Testing: One-Sample Tests

Two-Sample Tests

Analysis of Variance

Chi-Square and Nonparametric

Introduction to Multiple

Multiple Regression

Time-Series Forecasting

Business Analytics

A Roadmap for Analyzing Data

Statistical Applications in Quality Management

Decision Making

Filters