A Financial Analyst Studied the Percentage Rates of Return of Three

A financial analyst studied the percentage rates of return of three different types of mutual funds. Random samples of percentage rates of return for five periods were taken from each fund. The results appear in the table below. $$\begin{array} { | c | c | c | } \hline & { \text { Mutual Funds Percentage Rates } } \\\hline \text { Fund A } & \text { Fund B } & \text { Fund C } \\\hline 12 & 4 & 9 \\\hline 15 & 8 & 3 \\\hline 13 & 6 & 5 \\\hline 14 & 5 & 7 \\\hline 17 & 4 & 4 \\\hline\end{array}$$ Test at the 5% significance level to determine whether the mean percentage rates for the three funds differ, assuming that the distribution is normal.