a random sample of n=1100 registered voters and found that 570 would vote for the republican candidate in a state senate race. Let p represent the proportion of registered voters who would vote for the republican candidate.

H0: p=.50

Ha: p > .50

a) the test statistic is z=____

b) regardless of what you actually computed, suppose your answer to part a was z=1.28. using this z, p value =___