The claim that the true mean diameter of the manufactured bolt is 30 mm, assume sigma =
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Question:
The claim that the true mean diameter of the manufactured bolt is 30 mm, assume sigma = 0.8. Suppose that a = 0.05 and n = 100 chosen to the test Z value are plus-minus 1.96 and X = 29.84.
a. State the appropriate null and alternative hypotheses.
b. Calculate the z test statistic.
c Is the test statistic in the rejection region?
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