Question 1

A scatter plot is a useful graphical method to determine if a set of sample data is from a normal population.

Accepted Answer

A) True 
 B)False  False

Question 2

The claim that "male and female students at Coastal Carolina University prefer different parking lots on campus" is an example of a chi-square null hypothesis.

Accepted Answer

A) True 
 B)False  False

Question 3

For hypothesis tests using a chi-square statistic, the rejection region is in the _____________ tail of the chi-square distribution.

Accepted Answer

Right

Question 4

We are interested in knowing if the following frequency distribution is normally distributed. The mean and standard deviation of the data is 600 and 160.   To test the hypothesis that the frequency distribution is normally distributed, the value of the chi-square test statistic is 12.19. What is the decision regarding the null hypothesis tested at the .05 level of significance?

Accepted Answer

Reject H₀ and conclud

Question 5

A personnel manager is concerned about absenteeism. She decides to sample the records to determine if absenteeism is distributed evenly throughout the six-day workweek. The null hypothesis to be tested is: Absenteeism is distributed evenly throughout the week. The 0.01 level is to be used. The sample results are:   What is the expected frequency?

Accepted Answer

A)  9 
B)  10 
C)  11 
D)  12 
A)  9 
B)  10 
C)  11 
D)  12

Question 6

A survey of the opinions of property owners about a street widening project was taken to determine whether the property owners' opinions were related to their property's distance (front-footage) from the street. A randomly selected sample of 100 property owners was contacted and the results are shown below.   What kind of table is this classification?

Accepted Answer

The answer of A survey of the opinions of property...

Question 7

For the goodness-of-fit test, the use of the chi-square statistic would be permissible in the following problem.

Accepted Answer

A) True 
 B)False

Question 8

To test for a normal distribution of a frequency distribution with 5 classes, we need to

Accepted Answer

A)  compute a F-statistic. 
B)  calculate a t-statistic. 
C)  convert the class marks to standard normal z-statistics. 
D)  convert the class limits to standard normal z-statistics. 
A)  compute a F-statistic. 
B)  calculate a t-statistic. 
C)  convert the class marks to standard normal z-statistics. 
D)  convert the class limits to standard normal z-statistics.

Question 9

A survey of the opinions of property owners about a street widening project was taken to determine whether the property owners' opinions were related to their property's distance (front-footage) from the street. A randomly selected sample of 100 property owners was contacted and the results are shown below.   What is the null hypothesis?

Accepted Answer

H₀: Opinions and prop

Question 10

Recently, students in a marketing research class were interested in the driving behavior of students. Specifically, the marketing students were interested if exceeding the speed limit was related to social activity. They collected the following responses from 100 randomly selected students:   The degrees of freedom for the analysis is:

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 11

For any chi-square goodness-of-fit problem, the number of degrees of freedom is found by

Accepted Answer

A)  n - k - 1. 
B)  k - 1. 
C)  n + 1. 
D)  n + k. 
A)  n - k - 1. 
B)  k - 1. 
C)  n + 1. 
D)  n + k.

Question 12

What is the degree of freedom for a chi-square goodness-of-fit test? ____________________________

Accepted Answer

The answer of What is the degree of freedom for...

Question 13

A recent study of the relationship between social activity and education showed the following results.   The null hypothesis for the analysis is:

Accepted Answer

A)  There is no relationship between social activity and education. 
B)  The correlation between social activity and education is zero. 
C)  As social activity increases, education increases. 
D)  The mean of social activity equals the mean of education. 
A)  There is no relationship between social activity and education. 
B)  The correlation between social activity and education is zero. 
C)  As social activity increases, education increases. 
D)  The mean of social activity equals the mean of education.

Question 14

When determining how well an observed set of frequencies fit an expected set of frequencies, what is the test statistic?

Accepted Answer

A)  F-statistic. 
B)  t-statistic. 
C)    statistic. 
D)  z-statistic. 
A)  F-statistic. 
B)  t-statistic. 
C)    statistic. 
D)  z-statistic.

Question 15

A sample of 100 production workers is obtained. The workers are classified by gender (male, female) and by age (under 20, 20-29, 30-39 and 40 or over). How many degrees of freedom are there?

Accepted Answer

A)  0 
B)  3 
C)  6 
D)  5 
A)  0 
B)  3 
C)  6 
D)  5

Question 16

A personnel manager is concerned about absenteeism. She decides to sample the records to determine if absenteeism is distributed evenly throughout the six-day workweek. The null hypothesis to be tested is: Absenteeism is distributed evenly throughout the week. The 0.01 level is to be used. The sample results are:   How many degrees of freedom are there?

Accepted Answer

A)  0 
B)  3 
C)  4 
D)  5 
A)  0 
B)  3 
C)  4 
D)  5

Question 17

What is the shape of the chi-square distribution? ___________________

Accepted Answer

The answer of What is the shape of the chi-square...

Question 18

A survey of the opinions of property owners about a street widening project was taken to determine whether the resulting opinion was related to the distance from the street. A randomly selected sample of 100 property owners was contacted and the results are shown below.   What is the expected frequency for people who are undecided about the project and have property front-footage between 45 and 120 feet?

Accepted Answer

A)  2.2 
B)  3.9 
C)  5.0 
D)  7.7 
A)  2.2 
B)  3.9 
C)  5.0 
D)  7.7

Question 19

To verify that a frequency distribution for sample data is normally distributed, a _____________ statistic is used to test the hypothesis that the sample data is normally distributed.

Accepted Answer

The answer of To verify that a frequency distribution for...

Question 20

To test for a normal distribution of a frequency distribution with 5 classes, we need to find

Accepted Answer

A)  the t-statistic. 
B)  the expected frequency for each class. 
C)  the class marks. 
D)  the class relative frequencies. 
A)  the t-statistic. 
B)  the expected frequency for each class. 
C)  the class marks. 
D)  the class relative frequencies.

A scatter plot is a useful graphical method to determine if a set of sample data is from a normal population.

The claim that "male and female students at Coastal Carolina University prefer different parking lots on campus" is an example of a chi-square null hypothesis.

For hypothesis tests using a chi-square statistic, the rejection region is in the _____________ tail of the chi-square distribution.

For the goodness-of-fit test, the use of the chi-square statistic would be permissible in the following problem.

To test for a normal distribution of a frequency distribution with 5 classes, we need to

For any chi-square goodness-of-fit problem, the number of degrees of freedom is found by

What is the degree of freedom for a chi-square goodness-of-fit test? ____________________________

A recent study of the relationship between social activity and education showed the following results. The null hypothesis for the analysis is:

When determining how well an observed set of frequencies fit an expected set of frequencies, what is the test statistic?

A sample of 100 production workers is obtained. The workers are classified by gender (male, female) and by age (under 20, 20-29, 30-39 and 40 or over). How many degrees of freedom are there?

What is the shape of the chi-square distribution? ___________________

To verify that a frequency distribution for sample data is normally distributed, a _____________ statistic is used to test the hypothesis that the sample data is normally distributed.

To test for a normal distribution of a frequency distribution with 5 classes, we need to find

What Is Statistics

Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

Describing Data: Numerical Measures

Describing Data: Displaying and Exploring Data

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Analysis of Variance

Correlation and Linear Regression

Multiple Regression Analysis

Index Numbers

Time Series and Forecasting

Nonparametric Methods: Analysis of Ranked Data

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters

Exam 17: Nonparametric Methods: Goodness-Of-Fit Tests

A scatter plot is a useful graphical method to determine if a set of sample data is from a normal population.

The claim that "male and female students at Coastal Carolina University prefer different parking lots on campus" is an example of a chi-square null hypothesis.

For hypothesis tests using a chi-square statistic, the rejection region is in the _____________ tail of the chi-square distribution.

For the goodness-of-fit test, the use of the chi-square statistic would be permissible in the following problem.

To test for a normal distribution of a frequency distribution with 5 classes, we need to

For any chi-square goodness-of-fit problem, the number of degrees of freedom is found by

What is the degree of freedom for a chi-square goodness-of-fit test? ____________________________

A recent study of the relationship between social activity and education showed the following results. The null hypothesis for the analysis is:

When determining how well an observed set of frequencies fit an expected set of frequencies, what is the test statistic?

A sample of 100 production workers is obtained. The workers are classified by gender (male, female) and by age (under 20, 20-29, 30-39 and 40 or over). How many degrees of freedom are there?

What is the shape of the chi-square distribution? ___________________

To verify that a frequency distribution for sample data is normally distributed, a _____________ statistic is used to test the hypothesis that the sample data is normally distributed.

To test for a normal distribution of a frequency distribution with 5 classes, we need to find

What Is Statistics

Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

Describing Data: Numerical Measures

Describing Data: Displaying and Exploring Data

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Analysis of Variance

Correlation and Linear Regression

Multiple Regression Analysis

Index Numbers

Time Series and Forecasting

Nonparametric Methods: Analysis of Ranked Data

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters