BuyFind

Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
Publisher: Cengage Learning
ISBN: 9781133956570
BuyFind

Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
Publisher: Cengage Learning
ISBN: 9781133956570

Solutions

Chapter
Section
Chapter 6, Problem 16P
Textbook Problem

According to a recent, people smile an average of μ = 62 time per day. Assuming that the distribution of smiles is approximately normal with a standard deviation of σ = 18, find each of the following values.

  1. a. What proportion of people smile more than 80 times a day?
  2. b. What proportion of people smile at least 50 times a day?

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Chapter 6 Solutions

Essentials of Statistics for the Behavioral Sciences

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