we’d like to test the hypothesis of H0: the proportion of success in a population in p=.56, versus the alternative H1:p < .56 at alpha = .05 level of significance. we take a sample of size 400, and get 203 successes.
A) assuming H0is the true distribution, it is approximately normal with mean ______ and standard deviation _______
B) the critical value for z alpha is?
c) the sample proportion is
the test statistic to be compared with the critical value is
D) the P value is?