Four Different Types of Insecticides Are Used on Strawberry Plants

Multiple Choice

Four different types of insecticides are used on strawberry plants. The number of strawberries on eachrandomly selected plant is given below. Find the test statistic F to test the hypothesis that the type of insecticidemakes no difference in the mean number of strawberries per plant. Use α = 0.01. $$\begin{array} { c c c c } \hline \text { Insecticide } 1 & \text { Insecticide } 2 & \text { Insecticide } 3 & \text { Insecticide } 4 \\\hline 6 & 5 & 6 & 3 \\5 & 8 & 3 & 5 \\6 & 5 & 4 & 3 \\7 & 5 & 3 & 4 \\7 & 5 & 2 & 5 \\6 & 6 & 3 & 4 \\\hline\end{array}$$

A) 8.357
B) 8.123
C) 7.123
D) 6.912