Which is one of the conditions for constructing a difference in two proportions confidence interval? O n1and n2 must both be at least 30.
O All expected frequencies are at least five.
O nip1210,nı (1-P1) z 10, and n2 P2210, n2 (1-p_2) 2 10.
O Your correlation coefficient must be close to 1 or -1.