Suppose that you are testing the hypotheses H0?: p =0.39 vs. HA?: p >0.39. A sample of size 200 results in a sample proportion of 0.44
?a) Construct a 95?% confidence interval for p.
?b) Based on the confidence? interval, can you reject H0 at alpha =0.025?? Explain.
?c) What is the difference between the standard error and standard deviation of the sample? proportion?
?d) Which is used in computing the confidence? interval?