PLEASE MAKE ANSWER VISABLY For each of the following examples, state whether the

Question

PLEASE MAKE ANSWER VISABLY
For each of the following examples, state whether the chi-square goodness-of-fit test or the chi-square test for independence is appropriate, and state the degrees of freedom (df) for the test.

Part (a)

An instructor tests whether class attendance (low, high) and grade point average (low, high) are independent.

State whether the chi-square goodness-of-fit test or the chi-square test for independence is appropriate.

chi-square goodness-of-fit chi-square test for independence    

State the degrees of freedom for the test.
df =

Part (b)

A student tests whether the professor's speaking style (monotone, dynamic) and student interest (low, average, high) are independent.

State whether the chi-square goodness-of-fit test or the chi-square test for independence is appropriate.

chi-square goodness-of-fit chi-square test for independence    

State the degrees of freedom for the test.
df =

Part (c)

A health psychologist records the number of below average, average, overweight, and obese individuals in a sample of college students.

State whether the chi-square goodness-of-fit test or the chi-square test for independence is appropriate.

chi-square goodness-of-fit chi-square test for independence    

State the degrees of freedom for the test.

Explanation / Answer

(1) Independence test df = 1

=df = (2-1)(2-1) = 1

(2) Independence test df = 2

df = (2-1)(3-1) = 2

(3) goodness-of-fit test df = 3

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