Elementary Statistics
12th Edition
ISBN: 9780321836960
Author: Mario F. Triola
Publisher: PEARSON
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Chapter 10.6, Problem 6BSC
Finding the Best Model. In Exercises 5-16, construct a
6. Landscape Material The table lists the cost y (in dollars) of purchasing a volume of red landscaping mulch from the Red Bam Farm and Nursery in Dutchess County, New York. The mulch is sold by the “yard,” which is actually a cubic yard, and the variable x is the length (yd) of each side of a cubic yard.
| x | 1 | 1.5 | 2 | 25 | 3 |
| Cost | 35 | 118.13 | 280 | 546.88 | 945 |
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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 10 Solutions
Elementary Statistics
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