According to a recent report, people smile an average of m = 62 times per day. Assuming
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Question:
According to a recent report, people smile an average of m = 62 times per day. Assuming that the distribution of smiles is approximately normal with a standard deviation of o = 18, find each of the following values. Show all work.
a. What proportion of people smile more than 80 times a day?
Related Book For
Essentials of Statistics for the Behavioral Sciences
ISBN: 978-1285056340
8th Edition
Authors: Frederick J Gravetter, Larry B. Wallnau
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