Essentials Of Statistics For Business & Economics
9th Edition
ISBN: 9780357045435
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
Publisher: South-Western College Pub
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Textbook Question
Chapter 6.2, Problem 9E
A random variable is
- a. Sketch a normal curve for the
probability densityfunction . Label the horizontal axis with values of 35, 40, 45, 50, 55, 60, and 65. Figure 6.6 shows that the normal curve almost touches the horizontal axis at three standard deviations below and at three standard deviations above the mean (in this case at 35 and 65). - b. What is the probability the random variable will assume a value between 45 and 55?
- c. What is the probability the random variable will assume a value between 40 and 60?
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Chapter 6 Solutions
Essentials Of Statistics For Business & Economics
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