Probability and Statistics for Engineering and the Sciences
9th Edition
ISBN: 9781305251809
Author: Jay L. Devore
Publisher: Cengage Learning
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Chapter 11.2, Problem 17E
a.
To determine
Test whether there is any significant difference in the wet-mold strength from sand addition and carbon fiber addition using 5% level of significance.
b.
To determine
Test whether there is any significant difference in the casting hardness from sand addition and carbon fiber addition using 5% level of significance.
c.
To determine
Plot the casting hardness against the sand percentage for various levels of carbon fiber.
Identify whether plot is consistent with the results obtained in part (b).
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Chapter 11 Solutions
Probability and Statistics for Engineering and the Sciences
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