How long do you wait to have your prescriptions filled? According to USA Today, about 3 in

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How long do you wait to have your prescriptions filled? According to USA Today, €œabout 3 in 10 Americans wait more than 20 minutes to have a prescription filled.€ Suppose a comparison of waiting times for pharmacies in HMOs and pharmacies in drugstores produced the following results.

Waiting Time s 15 minutes 16–20 minutes > 20 minutes Don't know HMO Drugstores 75 119 44 21 21 37 10 23


a. Is there sufficient evidence to indicate that there is a difference in waiting times for pharmacies in HMOs and pharmacies in drugstores? Use α = .01.

b. If we consider only if the waiting time is more than 20 minutes, is there a significant difference in waiting times between pharmacies in HMOs and pharmacies in drugstores at the 1% level of significance?

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Introduction To Probability And Statistics

ISBN: 9780495389538

13th Edition

Authors: William Mendenhall, Robert J. Beaver, Barbara M. Beaver

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