A Researcher Wishes to Test Whether the Proportion of College

Essay

A researcher wishes to test whether the proportion of college students who smoke is the_
same at four different colleges. She randomly selects 100 students from each college and
records the number that smoke. The results are shown below. $$\begin{array} { r | c c c c } & \text { College A } & \text { College B } & \text { College C } & \text { College D } \\\hline \text { Smoke } & 17 & 26 & 11 & 34 \\\text { Don't Smoke } & 83 & 74 & 89 & 66\end{array}$$ Use a 0.01 significance level to test the claim that the proportion of students smoking is the
same at all four colleges.