Concept explainers
For Exercises 5 through 20, perform these steps.
a. State the hypotheses and identify the claim.
b. Find the critical value(s).
c. Compute the test value.
d. Make the decision.
e. Summarize the results.
Use the traditional method of hypothesis testing unless otherwise specified.
5. Ages at First Marriage for Women The median age at first marriage in 2014 for women was 27 years—the highest it has ever been. A random sample of women’s ages (in years) from recently applied for marriage licenses resulted in the following set of ages. At α = 0.05, is there sufficient evidence that the median is not 27 years?
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Elementary Statistics: A Step By Step Approach
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