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)

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-fitchi-square test for independence

State the degrees of freedom for the test.

df =

Part (b)

An instructor tests whether class attendance (low, average, 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-fitchi-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, and overweight 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-fitchi-square test for independence

State the degrees of freedom for the test.

df =

Part (d)

A sports psychologist compares the number of athletes with Type or Type B personality traits.

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

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

State the degrees of freedom for the test.

df =

A large company has claimed that the standard deviation of the monthly incomes of their employees is less than or equal to $120. To lest their claim, a random sample of 76 employees of the company was taken; and it was determined that the standard deviation of their incomes was $135. At 90% confidence, test the company's claim Select one: If chi (calculated)> chi, (critical) reject Ho, otherwise, do not reject Ho Since chi -94.97 : chi penuical #96.071, we reject Ho O b If chi (calculatedja chiapas, (critical) reject Ho. otherwise, do not reject H Since chia-94.92 Chi perusal #91.061, we reject He If chi (calculated)s= chi-, (critical) reject Ho. otherwise, do not reject H. Since chi- -95.91. Chi jalal -94.061, we reject Ho. If chi (calculatedje- chi's (critical) accept Ho, otherwise, do not reject H Since chi- -93.92 : Familial -91.161, we reject Ho If chi' (calculated)