Intro Stats
4th Edition
ISBN: 9780321826275
Author: Richard D. De Veaux
Publisher: PEARSON
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Chapter 4, Problem 48E
a.
To determine
Explain the difficulty in the distribution to discuss the center and spread.
b.
To determine
Explain the way to conduct the discussion of the spread and center of the distribution such that it is possible.
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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 4 Solutions
Intro Stats
Ch. 4.2 - The Bureau of Transportation Statistics of the...Ch. 4.2 - The Bureau of Transportation Statistics of the...Ch. 4.2 - Prob. 3JCCh. 4 - Prob. 1ECh. 4 - Prob. 2ECh. 4 - Prob. 3ECh. 4 - 4. Load factors by year Here is a display of the...Ch. 4 - Prob. 5ECh. 4 - Prob. 6ECh. 4 - Prob. 7E
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