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Use the normal distribution and the given sample results to complete the test of the given...

Use the normal distribution and the given sample results to complete the test of the given hypotheses. Assume the results come from a random sample and use a 5 % significance level:

a) Test H 0 : p = 0.5 vs H a : p > 0.5 using the sample results p ^ = 0.60 with n = 50

b) Test H0 : p=0.3 vs Ha : p<0.3 using the sample results p^=0.20 with n=198

c) Test H0 : p=0.75 vs Ha : p≠0.75 using the sample results p^=0.70 with n=124

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