Mathematics, 18.12.2021 23:30 jelopez4

A special cable has a breaking strength of 800 pounds A special cable has a breaking strength of 800 pounds. The standard deviation of the population is 12 pounds. A researcher selects a sample of 20 cables and finds that the average breaking strength is 793 pounds. Can he reject the claim that the breaking strength is 800 pounds? Find the P-value. Should the null hypothesis be rejected at α = 0.01? Assume that the variable is normally distributed.
A special cable has a breaking strength of 800 pounds

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