Subject Extroversion Neuroticism 1 43 49 2 46 53 3 48 67 4 48 57 5 48 56 6 50 48 7 51 60 8 51 41 9 53 51 10 58 47 11 62 41 12 63 51 13 63 30 14 63 28 15 67 55 16 67 47 17 67 39 7. What is the standard error of the correlation coefficient for the association of extroversion and neuroticism in personalities.xls?

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ISBN:9780470458365
Author:Erwin Kreyszig
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Subject Extroversion Neuroticism

1 43 49

2 46 53

3 48 67

4 48 57

5 48 56

6 50 48

7 51 60

8 51 41

9 53 51

10 58 47

11 62 41

12 63 51

13 63 30

14 63 28

15 67 55

16 67 47

17 67 39

7. What is the standard error of the correlation coefficient for the association of extroversion and neuroticism in personalities.xls?

8. Carry out a formal t-test for the association between extroversion and neuroticism in personalities.xls.

H0: The population correlation coefficient is 0.

HA: The population correlation coefficient is not 0.

What is the value of the t-statistic corresponding to this test?  (Report the absolute value.  The t-distribution is symmetric, thus it is easier to compare the absolute value of the t-statistic with the positive values in statistical table C).

9. Carry out a formal t-test for the association between extroversion and neuroticism in personalities.xls.

H0: The population correlation coefficient is 0.

HA: The population correlation coefficient is not 0.

What is the critical value of the t-statistic required to reject the null hypothesis at a confidence level of 0.05?  (Report the absolute value.  The t-distribution is symmetric, thus it is easier to compare the absolute value of the t-statistic with the positive values in statistical table C).

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