Claim: p1 < p2; α = 0.05.
Sample statistics: x1 = 471, n1 = 785 and x2 = 372, n2 = 465
Determine whether a normal sampling distribution can be used. If it can be used, test the claim about the difference between two population proportions p1 and p2 at the level of significance α. Assume the samples are random and independent. |

New search. (Also 1294 free access solutions) |