Several drugs are used to treat diabetes. A sales specialist for a leading pharmaceutical company needs an

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Several drugs are used to treat diabetes. A sales specialist for a leading pharmaceutical company needs an estimate of the number of new prescriptions that were written during a particular month for his company€™s new diabetes drug. The numbers of new prescriptions in a random sample of 25 sales districts are as follows:
Several drugs are used to treat diabetes. A sales specialist

a. Find a 90% confidence interval for the average number of new prescriptions written for this new drug among all the sales districts. State the assumptions.
b. Calculate the widths for 95% and 98% confidence intervals.

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Statistics For Business And Economics

ISBN: 9780132745659

8th Edition

Authors: Paul Newbold, William Carlson, Betty Thorne

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