Question

You may either use SPSS for this problem or carry it out using hand calculations Below...

  1. You may either use SPSS for this problem or carry it out using hand calculations Below are data for n = 20 individuals indicating the resting pulse rate of each person, and whether or not that person regularly exercises.

Exercise and pulse rate data

Person

Resting pulse rate

Regularly exercises

1

72

No

2

62

Yes

3

72

Yes

4

84

No

5

60

Yes

6

63

Yes

7

66

No

8

72

No

9

75

Yes

10

60

Yes

11

62

No

12

84

No

13

76

No

14

60

Yes

15

52

Yes

16

60

No

17

64

Yes

18

74

Yes

19

68

Yes

20

64

Yes

  1. Compute and interpret the value of Cohen’s d (effect size). Note. The value of the pooled standard deviation is Sp = 7.74

Homework Answers

Answer #1

d = abs(Xbar1- ybar)/Sp = (72-64.5)/7.74 = 0.96899

this means magnitude is large

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