Solution-In a random sample of 70 subjects the sample mean

Question: Consider the hypothesis test given by:

H_o: μ = 670

H_o: μ ≠ 670

In a random sample of 70 subjects, the sample mean is found to be The population standard deviation is known to be :

(a) Determine the P-value for this test.

(b) Is there sufficient evidence to justify the rejection of at the level? Explain.

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