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Hypothesis Tests about a Single Mean, A Single Proportion or a Single Variance Suggested Problems

A machine that produces ball bearings is set so that the average diameter is .50 inch. In a sample of 100 ball bearings, it was found that x-bar = .51 inch. Assuming that the standard deviation is .05 inch, can we conclude at the 5% significance level that the mean diameter is not .50 inch? (Keller

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Hypothesis Tests about a Single Mean, A Single Proportion or a Single Variance Suggested Problems

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