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Question 4 - 15 marks Given the hypotheses below. H0 : 150 HA: < 150 Month Demand 1 37 2 40 3 41 4 37

Question 4 - 15 marks

Given the hypotheses below.

H0 : 150

HA: < 150

Month Demand

a)Calculate the test statistic for sample of size60, mean25, and standard deviation of5. (8 marks)

b) At Alpha= 0.05, do you reject or not reject the null hypothesis?

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