Question: Test the claim about the population mean at the level of significance a. Assume the population is normally distributed. Claim: > 12,700;

Test the claim about the population mean µ at the level of significance a. Assume the population is normally distributed.

Claim: µ > 12,700; α = 0.005.

Sample statistics: x̅ = 12,855, σ = 248, n = 21

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