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QUESTION 3 What is the Sample Size given standard deviation is 3.12, error is within 0.66, and confidence level is 0.87 QUESTION 5 The claim

QUESTION 3

What is the Sample Size given standard deviation is 3.12, error is within 0.66, and confidence level is 0.87

QUESTION 5

The claim is a mean is 88 and you want to prove it is less. Test the hypothesis using an alpha of 0.05.Your sample of 15 had a mean of 83.6 and standard deviation of 15.84.

Calculate the Critical Decision Rule.

QUESTION 6

The claim is a mean is 222 and you want to prove it is less. Test the hypothesis within a 10% level of significance.Your sample of 87 had a mean of 213.12 and standard deviation of 79.92.

Calculate the Test Statistic.

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