Question: A random sample of 28 plastic items is obtained, and their breaking strengths are measured. The sample mean is 7.442 and the sample standard deviation

A random sample of 28 plastic items is obtained, and their breaking strengths are measured. The sample mean is 7.442 and the sample standard deviation is 0.672. Conduct a hypothesis test to assess whether there is any evidence that the average breaking strength is not 7.000.

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The hypotheses are H 0 7000 versus H A 7000 ... View full answer

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