Probability and Statistics for Engineers and Scientists
9th Edition
ISBN: 9780321629111
Author: Ronald E. Walpole, Raymond H. Myers, Sharon L. Myers, Keying Ye
Publisher: Prentice Hall
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Chapter 11.12, Problem 59RE
To determine
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9.2 Testing the Mean mu:
Problem 3
(1 point)
Test the claim that the population of sophomore college
students has a mean grade point average greater than 2.2.
Sample statistics include n = 71, x = 2.44, and s = 0.9.
Use a significance level of a = 0.01.
The test statistic is
The P-Value is between :
The final conclusion is
< P-value <
A. There is sufficient evidence to support the claim that
the mean grade point average is greater than 2.2.
○ B. There is not sufficient evidence to support the claim
that the mean grade point average is greater than 2.2.
Note: You can earn partial credit on this problem.
Note: You are in the Reduced Scoring Period. All work counts for
50% of the original.
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Chapter 11 Solutions
Probability and Statistics for Engineers and Scientists
Ch. 11.3 - A study was conducted at Virginia Tech to...Ch. 11.3 - The grades of a class of 9 students on a midterm...Ch. 11.3 - The amounts of a chemical compound y that...Ch. 11.3 - The following data were collected to determine the...Ch. 11.3 - A study was made on the amount of converted sugar...Ch. 11.3 - In a certain type of metal test specimen, the...Ch. 11.3 - The following is a portion of a classic data set...Ch. 11.3 - Prob. 8ECh. 11.3 - Prob. 9ECh. 11.3 - Prob. 10E
Ch. 11.3 - The thrust of an engine (y) is a function of...Ch. 11.3 - Prob. 12ECh. 11.3 - A study of the amount of rainfall and the quantity...Ch. 11.3 - Prob. 14ECh. 11.6 - With reference to Exercise 11.1 on page...Ch. 11.6 - Prob. 16ECh. 11.6 - Prob. 17ECh. 11.6 - Prob. 18ECh. 11.6 - Prob. 19ECh. 11.6 - Prob. 20ECh. 11.6 - Prob. 21ECh. 11.6 - Prob. 22ECh. 11.6 - Prob. 23ECh. 11.6 - Prob. 25ECh. 11.6 - Prob. 26ECh. 11.6 - Prob. 27ECh. 11.6 - Prob. 28ECh. 11.6 - Prob. 29ECh. 11.6 - Prob. 30ECh. 11.9 - Prob. 31ECh. 11.9 - Prob. 32ECh. 11.9 - Prob. 33ECh. 11.9 - Prob. 34ECh. 11.9 - Prob. 35ECh. 11.9 - Prob. 36ECh. 11.9 - Prob. 37ECh. 11.9 - Prob. 38ECh. 11.9 - A regression model is desired relating temperature...Ch. 11.9 - Prob. 40ECh. 11.9 - Prob. 41ECh. 11.9 - Prob. 42ECh. 11.12 - Prob. 43ECh. 11.12 - Prob. 44ECh. 11.12 - Prob. 45ECh. 11.12 - Prob. 46ECh. 11.12 - Prob. 47ECh. 11.12 - With reference to Exercise 11.8 on page 399,...Ch. 11.12 - Prob. 49RECh. 11.12 - Prob. 50RECh. 11.12 - Prob. 51RECh. 11.12 - Prob. 52RECh. 11.12 - Prob. 53RECh. 11.12 - Prob. 54RECh. 11.12 - Prob. 55RECh. 11.12 - Prob. 56RECh. 11.12 - Prob. 57RECh. 11.12 - Prob. 58RECh. 11.12 - Prob. 59RECh. 11.12 - Prob. 60RECh. 11.12 - Prob. 61RECh. 11.12 - Prob. 62RECh. 11.12 - Prob. 63RECh. 11.12 - Prob. 64RECh. 11.12 - Prob. 65RECh. 11.12 - Prob. 66RECh. 11.12 - Prob. 67RE
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