Given =0.05 , x1=109 , x2=78, n1=475 , n2=325 with p1 < p2 , then a). State the null and alternative hypothesis and which tail

Given α=0.05, x1=109 , x2=78, n1=475 , n2=325 with p1 < p2, then

a). State the null and alternative hypothesis and which tail   

b). Find the test statistics, z0

c). Test the hypothesis and make the decision whether reject or fail to reject null hypothesis.