A history instructor has given the same pretest and the same final examination each semester. He is interested in determining if there is a relationship between the scores of the two tests.
He computes the linear correlation coefficient and notes that it is 1.15. What does this correlation coefficient value tell the instructor? A) The history instructor has made a computational error.
B) There is a strong positive correlation between the tests.
C) There is a strong negative correlation between the tests.
D) The correlation is something other than linear.
Question 2
Suppose you want to test the claim that = 3.5. Given a sample size of n = 48 and a level of significance of = 0.01, when should you reject H0 ?
A) Reject H0 if the standardized test statistic is greater than 2.575 or less than -2.575.
B) Reject H0 if the standardized test statistic is greater than 2.33 or less than -2.33.
C) Reject H0 if the standardized test statistic is greater than 1.96 or less than -1.96
D) Reject H0 if the standardized test statistic is greater than 1.645 or less than -1.645
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