Concept explainers
For Exercises 11 through 27, perform the following steps.
a. Draw the
b. Compute the value of the
c. State the hypotheses.
d. Test the significance of the correlation coefficient at α = 0.05, using Table I.
e. Give a brief explanation of the type of relationship. Assume all assumptions have been met.
15. Alumni Contributions The director of an alumni association for a small college wants to determine whether there is any type of relationship between the amount of an alumnus’s contribution (in dollars) and the number of years the alumnus has been out of school. The data follow.
(The information is used for Exercises 15, 36, and 37 in Section 10–2 and Exercises 17 and 21 in Section 10–3.)
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Chapter 10 Solutions
ELEMENTARY STATISTICS: STEP BY STEP- ALE
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