The amount of shaft wear (.0001 in.) after a fixed mileage
Chapter 8, Problem 8.29(choose chapter or problem)
The amount of shaft wear (.0001 in.) after a fixed mileage was determined for each of n 8 internal combustion engines having copper lead as a bearing material, resulting in x 3.72 and s 1.25. a. Assuming that the distribution of shaft wear is normal with mean , use the t test at level .05 to test H0: 3.50 versus Ha: 3.50. b. Using 1.25, what is the type II error probability ( ) of the test for the alternative 4.00? 30. Th
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