Stat 200 solution

stat 200 solution

1. If an experiment is conducted with 5 conditions and 6 subjects in each condition, what are dfn and dfe?

2. Participants threw darts at a target. In one condition, they used their preferred hand; in the other condition, they used their other hand. All subjects performed in both conditions (the order of conditions was counterbalanced). Their scores are shown below.

Preferred

Non Preferred

12

7

7

9

11

8

13

10

10

9

a. Which kind of t-test should be used? 


b. Calculate the two-tailed t and p values using this t test.

c. Calculate the one-tailed t and p values using this t test.

3. Is the variance for the amount of money, in dollars, that shoppers spend on Saturdays at the mall the same as the variance for the amount of money that shoppers spend on Sundays at the mall? Suppose that the Table shows the results of a study.

Saturday

Sunday

Saturday

Sunday

75

44

62

137

18

58

0

82

150

61

124

39

94

19

50

127

62

99

31

141

73

60

118

73

89