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Concept explainers
Ages of Moviegoers Based on the data from Cumulative Review Exercise 7, assume that ages of moviegoers are
a. What is the percentage of moviegoers who are younger than 30 years of age?
b. Find P25, which is the 25th percentile.
c. Find the probability that a simple random sample of 25 moviegoers has a mean age that is less than 30 years.
d. Find the probability that for a simple random sample of 25 moviegoers, each of the moviegoers is younger than 30 years of age. For a particular movie and showtime, why might it not be unusual to have 25 moviegoers all under the age of 30?
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Chapter 10 Solutions
MyLab Statistics with Pearson eText -- Standalone Access Card -- for Essentials of Statistics
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill
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