Answer
$F_0=9.717$ with a P-value $\ltα$. Reject the null hypothesis.
There is enough evidence to conclude that at least one of the sample means is different.
Work Step by Step
In MINITAB, enter the Sample1 values in C1, the Sample 2 values in C2 and in C3 enter the Sample 3 values.
Select Stat -> ANOVA -> One-Way
Select Response data are in a separate column for each factor level.
In Responses enter C1 C2 C3
Click Ok.
$F_0=9.717$ with a P-value $=0.002\ltα=0.05$
