Using the Data Below and a 0

Essay

Using the data below and a 0.05 significance level, test the claim that the responses occur with percentages of 15%, 20%, 25%, 25% , and 15% respectively.
$\begin{array} { r | c c c c c } \text { Response } & \mathrm { A } & \mathrm { B } & \mathrm { C } & \mathrm { D } & \mathrm { E } \\\hline \text { Frequency } & 12 & 15 & 16 & 18 & 19\end{array}$