Essay
A sample of 30 observations provides the following statistics: sx = 14; sy = 19; sxy = -150.
A) Calculate and interpret the sample correlation coefficient rxy.
B) Specify the hypotheses to determine whether or not x and y are significantly correlated.
C) At the 5% significance level, what is the conclusion to the test using the critical-value approach? Explain.
D) At the 5% significance level, what is the conclusion to the test using the p-value approach? Explain.
Correct Answer:
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a. rxy = -0.56; moderate negative linear r...View Answer
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