Basic Business Statistics, Student Value Edition
Basic Business Statistics, Student Value Edition
14th Edition
ISBN: 9780134685113
Author: Mark L. Berenson, David M. Levine, David F. Stephan, Kathryn Szabat
Publisher: PEARSON
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Chapter 7, Problem 6PS

The weight of an energy bar is approximately normally distributed with a mean of 42.05 grams with a standard deviation of 0.025 gram.

a. What is the probability that an individual energy bar contains less than 42.035 grams?

b. If a sample of 4 energy bars is selected, what is the probability that the sample mean weight is than 42.035 grams?

c. If a sample of 25 energy bars is selected, what is the probability that the sample mean weight is less than 42.035 grams?

d. Explain the difference in the results in (a) and (c).

e. Explain the difference in the results in (b) and (c).

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Basic Business Statistics, Student Value Edition

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