Question: A) We want to test if ABC bank's default rate is significantly less than 8%. Out of a random sample of 300 customers, 22

A) We want to test if ABC bank's default rate is significantly

A) We want to test if ABC bank's default rate is significantly less than 8%. Out of a random sample of 300 customers, 22 customers defaulted. Construct HO and Ha, and test it with a significant level 5%. B) We want to test if the approval rate of school tax bill is significantly more than 60%. 1290 out of 2000 randomly selected voters support the bill. Construct HO and Ha, and test it with a significant level 5%. C) Calculate the p-value of the test statistic in Exercise A. Is the p-value consistent with the test result? Also test HO again with a = 0.01 and a = 0.001. D) Calculate the p-value of the test statistic in Exercise B. Is the p-value consistent with the test result? Also test HO again with a = 0.01 and a = 0.001.

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