Introductory Statistics (10th Edition)
10th Edition
ISBN: 9780321989178
Author: Neil A. Weiss
Publisher: PEARSON
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Textbook Question
Chapter 5.2, Problem 36E
World Series. The World Series in baseball is won by the first team to win four games (ignoring the 1903 and 1919–1921 World Series, when it was a best of nine). From the document World Series History on the Baseball Almanac website, as of November 2013, the lengths of the World Series are as given in the following table.
| Number of games | Frequency | Relative frequency |
| 4 | 21 | 0.200 |
| 5 | 24 | 0.229 |
| 6 | 24 | 0.229 |
| 7 | 36 | 0.343 |
Let X denote the number of games that it takes to complete a World Series, and let Y denote the number of games that it took to complete a randomly selected World Series from among those considered in the table.
- a. Determine the
mean and standard deviation of the random variable Y. Interpret your results. - b. Provide an estimate for the mean and standard deviation of the random variable X. Explain your reasoning.
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Chapter 5 Solutions
Introductory Statistics (10th Edition)
Ch. 5.1 - Fill in the blanks. a. A relative-frequency...Ch. 5.1 - Provide an example (other than one discussed in...Ch. 5.1 - Let X denote the number of siblings of a randomly...Ch. 5.1 - Fill in the blank. For a discrete random variable,...Ch. 5.1 - Suppose that you make a large number of...Ch. 5.1 - What rule of probability permits you to obtain any...Ch. 5.1 - A variable x of a finite population has the...Ch. 5.1 - A variable y of a finite population has the...Ch. 5.1 - A variable y of a finite population has the...Ch. 5.1 - A variable x of a finite population has the...
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