9. The owner of the store from Chapter 12, Exercise 1, wants to know if the mean
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9. The owner of the store from Chapter 12, Exercise 1, wants to know if the mean age of all customers is 25 years old.
a) What is the null hypothesis?
b) Is the alternative one- or two-sided?
c) What is the value of the test statistic?
d) What is the P-value of the test statistic?
e) What do you conclude at f ) Given the confidence interval you found in Chapter 12, Exercise 7, what might you have concluded? Explain.
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Related Book For 
Business Statistics
ISBN: 9780321716095
2nd Edition
Authors: Norean D. Sharpe, Paul F. Velleman, David Bock, Norean Radke Sharpe
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