Question 1

In a chi-square goodness-of-fit test when there is close agreement between the observed frequency and the expected frequency, the chi-square test value will be small.

Accepted Answer

A) True 
 B)False

Question 2

A contingency table is made up of 8 rows and 4 columns. How many degrees of freedom are present?

Accepted Answer

A)  32 
B)  28 
C)  24 
D)  21

Question 3

A shoe salesman wants to see if his female customers have a preference in the color of shoe purchased. Compute the test value for the following data.

Accepted Answer

A)  28.31 
B)  16.77 
C)  26.80 
D)  21.50

Question 4

A quality control supervisor selected a sample of 100 electronic components from each of three different production chains to determine if the production chains had the same rates of meeting their quality standards. At  = .05, test the claim that the proportions are equal.

Accepted Answer

A)  There is evidence to reject the claim that the proportions are equal because the test value 5.991 > 5.743 
B)  There is not evidence to reject the claim that the proportions are equal because the test value 5.743  5.743 
D)  There is evidence to reject the claim that the proportions are equal because the test value 5.743 < 5.991

Question 5

The table lists the number of students from three different high schools participating in the mathematics and physics sections of a science fair. At  , test the claim that the section of participation and the high school where the students were from are independent.

Accepted Answer

A)  There is evidence to reject the claim that the high school and the section of participation are independent because the test value 12.592 > 1.198 
B)  There is not evidence to reject the claim that the high school and the section of participation are independent because the test value 1.198  1.198 
D)  There is not evidence to reject the claim that the high school and the section of participation are independent because the test value 3.917 < 5.991

Question 6

Two computer stores recorded the number of computers sold in a week along with the sizes of their hard drives. At  , test the claim that the distribution of hard drives and the store where the computers were bought are not related.

Accepted Answer

A) There is evidence to reject the claim that the size of hard drive sold and the store number are not related because the test value 25.309 > 7.815 B) There is evidence to reject the claim that the size of hard drive sold and the store number are not related because the test value 2.027 > 7.815 C) There is not evidence to reject the claim that the size of hard drive sold and the store number are not related because the test value 7.815 < 2.027 D) There is not evidence to reject the claim that the size of hard drive sold and the store number are not related because the test value 15.507 < 2.027

Question 7

The formula for finding the chi-square test value is __________.

Accepted Answer

The answer of The formula for finding the chi-square test...

Exam 11: Other Chi-Square Tests

In a chi-square goodness-of-fit test when there is close agreement between the observed frequency and the expected frequency, the chi-square test value will be small.

A contingency table is made up of 8 rows and 4 columns. How many degrees of freedom are present?

A shoe salesman wants to see if his female customers have a preference in the color of shoe purchased. Compute the test value for the following data.

A quality control supervisor selected a sample of 100 electronic components from each of three different production chains to determine if the production chains had the same rates of meeting their quality standards. At = .05, test the claim that the proportions are equal.

The table lists the number of students from three different high schools participating in the mathematics and physics sections of a science fair. At , test the claim that the section of participation and the high school where the students were from are independent.

Two computer stores recorded the number of computers sold in a week along with the sizes of their hard drives. At , test the claim that the distribution of hard drives and the store where the computers were bought are not related.

The formula for finding the chi-square test value is __________.