Essentials of Modern Business Statistics with Microsoft Office Excel (Book Only)
Essentials of Modern Business Statistics with Microsoft Office Excel (Book Only)
7th Edition
ISBN: 9781337298353
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams
Publisher: South-Western College Pub
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Chapter 7.3, Problem 10E

Morningstar publishes ratings data on 1208 company stocks. A sample of 40 of these stocks is contained in the DATAfile named Morningstar. Use the data set to answer the following questions.
a. Develop a point estimate of the proportion of the stocks that receive Morningstar's highest rating of 5 Stars.
b. Develop a point estimate of the proportion of the Morningstar stocks that are rated Above Average with respect to business risk.
c. Develop a point estimate of the proportion of the Morningstar stocks that are rated 2 Stars or less.

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