Suppose data are obtained from 20 pairs of (x, y) and the
Chapter 11, Problem 11-67(choose chapter or problem)
Suppose data are obtained from 20 pairs of (x, y) and the sample correlation coefficient is 0.75. (a) Test the hypothesis that against with . Calculate the P-value. (b) Test the hypothesis that against with . Calculate the P-value. (c) Construct a 95% one-sided confidence interval for the correlation coefficient. Explain how the questions in parts (a) and (b) could be answered with a confidence interval.
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