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A manufacturer claims that the average strength of a thin steel thread is 90 kg. Fifty pieces are tested and the results are a mean
A manufacturer claims that the average strength of a thin steel thread is 90 kg. Fifty pieces are tested and the results are a mean strength of 88 kg with a standard deviation of 3.7 kg. At the 0.01 level of significance test the hypothesis that the strength is less than 90 kg. Which of the following statements would be true
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Encyclopaedia Of General Topology
Authors: Md Mushtaque Khan
1st Edition
9353147530, 9789353147532
