Essay
A machine cuts steel to length for nails. The mean length of a nail is 43 millimeters. There is concern that the settings of the machine producing the nails have changed. To test the claim, 12 nails (n = 12) were sampled. The mean of the sample is 41.5 and the standard deviation is 1.784. What is the computed value of the test statistic?
Correct Answer:
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t = -2.913
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Correct Answer:
Verified
Explanation: For a ...
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