stats 200 week 8 questions for MathematicsExpert

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17.  The following data are from a hypothetical study on the effects of age and time on scores on a test of reading comprehension. Compute the analysis of variance summary table.

 

12 year olds

16 year olds

 

 

30 minutes

66

68

59

72

46

74

71

67

82

76

 

 

60 minutes

69

61

69

73

61

95

92

95

98

94

 

28.  (ADHD Treatment (AT) case study)

(AT) The dataset ADHD Treatment has four scores per subject.

a. Is the design between-subjects or within-subjects?

b. Create an ANOVA summary table.

 

Illowsky Chapter 13 Exercise

69.  A researcher wants to know if the mean times (in minutes) that people watch their favorite news station are the same.

Suppose that Table 13.24 shows the results of a study.

CNN

FOX

Local

45

15

72

12

43

37

18

68

56

38

50

60

23

31

51

35

22

 

 

Assume that all distributions are normal, the four population standard deviations are approximately the same, and the data were collected independently and randomly. Use a level of significance of 0.05.

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