Question 1

A chi-squared test of a contingency table can be used to determine whether two nominal variables are ____________________.

Accepted Answer

The answer of A chi-squared test of a contingency table...

Question 2

The expected frequency for the cell in row i and column j is the row i total plus the row j total, all divided by n.

Accepted Answer

A) True 
 B)False

Question 3

The null hypothesis in a chi-squared test of a contingency table is that the two nominal variables are ____________________.

Accepted Answer

The answer of The null hypothesis in a chi-squared test...

Question 4

A test for whether one proportion is higher than the other can be performed using the chi-squared distribution.

Accepted Answer

A) True 
 B)False

Question 5

To analyze the relationship between two nominal variables, use a(n) ____________________ test of a(n) ____________________.

Accepted Answer

chi-squared; conting

Question 6

The alternative hypothesis of a goodness-of-fit test states that ____________________ of the proportions is not equal to its value specified in H0.

Accepted Answer

Question 7

If we want to perform a one-tail test for differences between two populations of nominal data with exactly two categories, we must employ the z-test of p1 -p2.

Accepted Answer

A) True 
 B)False

Question 8

NARRBEGIN: Seat Belts
Seat Belts
A study was conducted to determine whether the use of seat belts in vehicles depends on whether or not a child was present in the car. A sample of 1,000 people treated for injuries sustained from vehicle accidents was obtained, and each person was classified according to (1) child present (yes/no) and (2) seat belt usage (worn or not worn) during the accident. The data are shown in the table below. $$\begin{array} { | l | c c | } 
& { \text { Child present in car } } \
\hline \text { Seat Belts } & \text { NO } & \text { YES } \
\hline \text { Worn } & 83 & 200 \
\text { Not Worn } & 337 & 380 \
\hline
\end{array}$$ NARREND
-{Seat Belts Narrative} At 5% level of significance, what is the proper conclusion?

Accepted Answer

Since @#LAT-DLM&² = 26.016 > 3.8415, we reject H₀ at

Question 9

Which of the following tests is appropriate for nominal data if the problem objective is to compare two populations and the number of categories exceeds 2?

Accepted Answer

A) The z-test for one proportion, p, or difference of two proportions, p1 - p2. 
B) The chi-squared goodness-of-fit test. 
C) The chi-squared test of a contingency table. 
D) All of these choices are true. 
A) The z-test for one proportion, p, or difference of two proportions, p1 - p2. 
B) The chi-squared goodness-of-fit test. 
C) The chi-squared test of a contingency table. 
D) All of these choices are true.

Question 10

Which of the following tests is appropriate for nominal data if the problem objective is to describe a population with more than two categories?

Accepted Answer

A) z-test for one proportion, p, or difference of two proportions, p1 - p2. 
B) chi-squared goodness-of-fitness test. 
C) chi-squared test of a contingency table. 
D) All of these choices are true. 
A) z-test for one proportion, p, or difference of two proportions, p1 - p2. 
B) chi-squared goodness-of-fitness test. 
C) chi-squared test of a contingency table. 
D) All of these choices are true.

Question 11

The chi-squared distribution is used in:

Accepted Answer

A) a goodness-of-fit test. 
B) a test of a contingency table. 
C) describing a population having more than two categories. 
D) All of these choices are true. 
A) a goodness-of-fit test. 
B) a test of a contingency table. 
C) describing a population having more than two categories. 
D) All of these choices are true.

Question 12

In testing the difference between two proportions using the normal distribution, we may use either a one-tailed or two-tailed test.

Accepted Answer

A) True 
 B)False

Question 13

The test statistic for the chi-squared test of a contingency table is the same as the test statistic for the goodness-of-fit test.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following tests does not use the chi-squared distribution?

Accepted Answer

A) Test of a contingency table. 
B) Goodness-of-fit test. 
C) One tailed test for two proportions. 
D) None of these choices. 
A) Test of a contingency table. 
B) Goodness-of-fit test. 
C) One tailed test for two proportions. 
D) None of these choices.

Question 15

A left tail area in the chi-squared distribution equals 0.99. For df = 8, the table value equals:

Accepted Answer

A) 20.090 
B) 3.4895 
C) 2.7326 
D) 15.5073 
A) 20.090 
B) 3.4895 
C) 2.7326 
D) 15.5073

Question 16

If we want to test for differences between two populations of nominal data with exactly two categories, we can employ either the z-test of p1-p2, or the chi-squared test of a contingency table.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following represents H1 in a chi-squared goodness-of-fit test to see if all 5 colors of a certain candy appear in the same proportion in the population?

Accepted Answer

A) H1: p1 = p2 = p3 = p4 = p5 = 0.20. 
B) H1: At least one proportion is not equal to 0.20. 
C) H1: None of these proportions are equal. 
D) None of these choices. 
A) H1: p1 = p2 = p3 = p4 = p5 = 0.20. 
B) H1: At least one proportion is not equal to 0.20. 
C) H1: None of these proportions are equal. 
D) None of these choices.

Question 18

The expected values of a contingency table are calculated based on the assumption that H0 is ____________________.

Accepted Answer

Question 19

A chi-squared test of a contingency table with 4 rows and 5 columns shows that the value of the test statistic is 22.18. Using a chi-squared table, the most accurate statement that can be made is:

Accepted Answer

A) p-value is greater than 0.05 
B) p-value is smaller than 0.025 
C) p-value is greater than 0.025 but smaller than 0.05 
D) p-value is greater than 0.10 
A) p-value is greater than 0.05 
B) p-value is smaller than 0.025 
C) p-value is greater than 0.025 but smaller than 0.05 
D) p-value is greater than 0.10

Question 20

What are the two critical factors in identifying the technique used when the data are nominal?

Accepted Answer

The first is the problem objec

A chi-squared test of a contingency table can be used to determine whether two nominal variables are ____________________.

The expected frequency for the cell in row i and column j is the row i total plus the row j total, all divided by n.

The null hypothesis in a chi-squared test of a contingency table is that the two nominal variables are ____________________.

A test for whether one proportion is higher than the other can be performed using the chi-squared distribution.

To analyze the relationship between two nominal variables, use a(n) test of a(n) .

The alternative hypothesis of a goodness-of-fit test states that ____________________ of the proportions is not equal to its value specified in H₀.

If we want to perform a one-tail test for differences between two populations of nominal data with exactly two categories, we must employ the z-test of p₁ -p₂.

Which of the following tests is appropriate for nominal data if the problem objective is to compare two populations and the number of categories exceeds 2?

Which of the following tests is appropriate for nominal data if the problem objective is to describe a population with more than two categories?

The chi-squared distribution is used in:

In testing the difference between two proportions using the normal distribution, we may use either a one-tailed or two-tailed test.

The test statistic for the chi-squared test of a contingency table is the same as the test statistic for the goodness-of-fit test.

Which of the following tests does not use the chi-squared distribution?

A left tail area in the chi-squared distribution equals 0.99. For df = 8, the table value equals:

If we want to test for differences between two populations of nominal data with exactly two categories, we can employ either the z-test of p₁-p₂, or the chi-squared test of a contingency table.

Which of the following represents H₁ in a chi-squared goodness-of-fit test to see if all 5 colors of a certain candy appear in the same proportion in the population?

The expected values of a contingency table are calculated based on the assumption that H₀ is ____________________.

A chi-squared test of a contingency table with 4 rows and 5 columns shows that the value of the test statistic is 22.18. Using a chi-squared table, the most accurate statement that can be made is:

What are the two critical factors in identifying the technique used when the data are nominal?

What Is Statistics

Graphical Descriptive Techniques I

Graphical Descriptive Techniques II

Numerical Descriptive Techniques

Data Collection and Sampling

Probability

Random Variables and Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Introduction to Estimation

Introduction to Hypothesis Testing

Inference About a Population

Inference About Comparing Two Populations

Analysis of Variance

Simple Linear Regression and Correlation

Multiple Regression

Filters

Exam 15: Chi-Squared Tests Optional

A chi-squared test of a contingency table can be used to determine whether two nominal variables are ____________________.

The expected frequency for the cell in row i and column j is the row i total plus the row j total, all divided by n.

The null hypothesis in a chi-squared test of a contingency table is that the two nominal variables are ____________________.

A test for whether one proportion is higher than the other can be performed using the chi-squared distribution.

To analyze the relationship between two nominal variables, use a(n) ____________________ test of a(n) ____________________.

The alternative hypothesis of a goodness-of-fit test states that ____________________ of the proportions is not equal to its value specified in H0.

If we want to perform a one-tail test for differences between two populations of nominal data with exactly two categories, we must employ the z-test of p1 -p2.

Which of the following tests is appropriate for nominal data if the problem objective is to compare two populations and the number of categories exceeds 2?

Which of the following tests is appropriate for nominal data if the problem objective is to describe a population with more than two categories?

The chi-squared distribution is used in:

In testing the difference between two proportions using the normal distribution, we may use either a one-tailed or two-tailed test.

The test statistic for the chi-squared test of a contingency table is the same as the test statistic for the goodness-of-fit test.

Which of the following tests does not use the chi-squared distribution?

A left tail area in the chi-squared distribution equals 0.99. For df = 8, the table value equals:

If we want to test for differences between two populations of nominal data with exactly two categories, we can employ either the z-test of p1-p2, or the chi-squared test of a contingency table.

Which of the following represents H1 in a chi-squared goodness-of-fit test to see if all 5 colors of a certain candy appear in the same proportion in the population?

The expected values of a contingency table are calculated based on the assumption that H0 is ____________________.

A chi-squared test of a contingency table with 4 rows and 5 columns shows that the value of the test statistic is 22.18. Using a chi-squared table, the most accurate statement that can be made is:

What are the two critical factors in identifying the technique used when the data are nominal?

What Is Statistics

Graphical Descriptive Techniques I

Graphical Descriptive Techniques II

Numerical Descriptive Techniques

Data Collection and Sampling

Probability

Random Variables and Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Introduction to Estimation

Introduction to Hypothesis Testing

Inference About a Population

Inference About Comparing Two Populations

Analysis of Variance

Simple Linear Regression and Correlation

Multiple Regression

Filters

To analyze the relationship between two nominal variables, use a(n) test of a(n) .

The alternative hypothesis of a goodness-of-fit test states that ____________________ of the proportions is not equal to its value specified in H₀.

If we want to perform a one-tail test for differences between two populations of nominal data with exactly two categories, we must employ the z-test of p₁ -p₂.

If we want to test for differences between two populations of nominal data with exactly two categories, we can employ either the z-test of p₁-p₂, or the chi-squared test of a contingency table.

Which of the following represents H₁ in a chi-squared goodness-of-fit test to see if all 5 colors of a certain candy appear in the same proportion in the population?

The expected values of a contingency table are calculated based on the assumption that H₀ is ____________________.