A sample of 25 observations provides the following statistics: sx = 2, sy = 5, and sxy
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sx = 2, sy = 5, and sxy = -1.75
a. Calculate and interpret the sample correlation coefficient rxy.
b. Specify the competing hypotheses in order to determine whether the population correlation coefficient differs from zero.
c. Make a conclusion at the 5% significance level.
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Related Book For
Business Statistics Communicating With Numbers
ISBN: 9780078020551
2nd Edition
Authors: Sanjiv Jaggia, Alison Kelly
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