This a question that you have to use SPSS to answer.

Five hundred students completed the "Census at School" survey. Each was asked how many hours per week they spent doing homework. A researcher uses a quasi-experimental design to compare the average time spent doing homework per week to high school students in different grades. The research question is, "Do students in different grades of high school spent significantly different amounts of time doing homework per week?" Five students were randomly selected from each grade; the data is presented below.

Grade 9 10 11 12

hours Spent 3 2 10 19

Doing 2 1 4 10

Homework 1 5 3 12

5 2 10 5

5 4 2 7

Question 7

Are the contrasts from hypothesis 1 and hypothesis 2 orthogonal? Provide an explanation for your decision.

Group of answer choices

A.Yes, the sum of the coefficients equals zero

B.Yes, the sum of the product of the coefficients equals zero

C.No, the sum of the coefficients does not equal zero

D.No, the sum of the product of the coefficients does not equal zero

Question 8

In Homework 2, the assumptions for the ANOVA test were met for this set of data.

What multiple comparisons procedure would be most appropriate to test all pairwise contrasts?

Group of answer choices

A.Dunnett's test

B.Tukey's test

C.Tukey Kramer test

D.Games Howell

Question 9

Consider these two hypotheses as a family of contrasts. What would the familywise error rate be for this set if each test was done at an=.05=.05?

Group of answer choices

A..025

B..050

C..098

D..100

Question 10

Using SPSS, provide the results for testing the contrasts from hypotheses 1 and 2.

What is the p-value for the first contrast? Input the value with three decimal places (#.###).

Question 11

Using SPSS, provide the results for testing the contrasts from hypotheses 1 and 2.

What is the p-value for the second contrast?Input the value with three decimal places (#.###).

Question 12

What conclusions can be made regarding contrast 1? Selectallthat apply.

Group of answer choices

A.Those in 12^thgradespent a significantly different amount of time doing homework than those in 9^thgrade.

B.Those in 12^thgradespent significantly less time doing homework than those in 9^thgrade.

C.Those in 12^thgradespent a significantly more time doing homework than those in 9^thgrade.

D.Those in 12^thgradespent the same amount of time doing homework than those in 9^thgrade.

Question 131pts

What conclusions can be made regarding contrast 2? Selectallthat apply.

Group of answer choices

A.Those in 12^thgrade spent a significantly different amount of time doing homework than the average time spent from those in other grades.

B.Those in 12^thgrade spent significantly less time doing homework than the average time spent from those in other grades.

C.Those in 12^thgrade spent significantly more time doing homework than the average time spent from those in other grades.

D.Those in 12^thgrade spent the same amount of time doing homework than the average time spent from those in other grades.

Question 14

Would trend analysis be an appropriate procedure for this study?

Group of answer choices

A.Yes

B.No