A Sample of Size 150 from Population 1 Has 40

Short Answer

A sample of size 150 from population 1 has 40 successes. A sample of size 250 from population 2 has 30 successes. The value of the test statistic for testing the null hypothesis that the proportion of successes in population 1 exceeds the proportion of successes in population 2 by 0.05 is: $\begin{array} { | l | l | } \hline \text { A. } & 1.645 \\\hline \text { B. } & 2.327 . \\\hline \text { C. } & 1.960 . \\\hline \text { D. } & 1.977 \\\hline\end{array}$