Solved: A random sample of 20 students yielded a mean of x

Probability and Statistics for Engineers and the Scientists | 9th Edition | ISBN: 9780321629111 | Authors: Ronald E. Walpole; Raymond H. Myers; Sharon L. Myers; Keying E. Ye

ISBN: 9780321629111 32

Solution for problem 9.72 Chapter 9

Probability and Statistics for Engineers and the Scientists | 9th Edition

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Probability and Statistics for Engineers and the Scientists | 9th Edition

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Problem 9.72

A random sample of 20 students yielded a mean of x = 72 and a variance of s2 = 16 for scores on a college placement test in mathematics. Assuming the scores to be normally distributed, construct a 98% condence interval for 2.

Step-by-Step Solution:

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Sergio Gonzalez Week 4 STATS 241 Chapter 4 Pt 2 Probability 19 20 21 22 Parents 17 20 16 16 69 Own 6 14 19 24 63 Other 4 6 4 3 17 Total 27 40 39 43 149 1. What is the Probability of picking a 19 year old 27/149= 18.12% 2. What is the probability of picking someone who is not 19 years old 10018.12= 81.88% 3. What is the probability that we pick someone who i

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Chapter 9, Problem 9.72 is Solved

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Textbook: Probability and Statistics for Engineers and the Scientists

Edition: 9

Author: Ronald E. Walpole; Raymond H. Myers; Sharon L. Myers; Keying E. Ye

ISBN: 9780321629111

This full solution covers the following key subjects: . This expansive textbook survival guide covers 18 chapters, and 1582 solutions. The full step-by-step solution to problem: 9.72 from chapter: 9 was answered by , our top Statistics solution expert on 05/06/17, 06:21PM. The answer to “A random sample of 20 students yielded a mean of x = 72 and a variance of s2 = 16 for scores on a college placement test in mathematics. Assuming the scores to be normally distributed, construct a 98% condence interval for 2.” is broken down into a number of easy to follow steps, and 43 words. Since the solution to 9.72 from 9 chapter was answered, more than 336 students have viewed the full step-by-step answer. Probability and Statistics for Engineers and the Scientists was written by and is associated to the ISBN: 9780321629111. This textbook survival guide was created for the textbook: Probability and Statistics for Engineers and the Scientists, edition: 9.