Answer
$F_0=15.89$ with a P-value $\ltα$. Reject the null hypothesis.
We can conclude that at least one population mean is different from the others.
Work Step by Step
$H_0:µ_{Lift-Off~Minus~1}=µ_{Return~Plus~1}=µ_{Return~Plus~1~Month}$ versus
$H_1:$ at least one population mean is different from the others
In MINITAB, enter the data according to the table below.
Select Stat -> ANOVA -> General Linear Model -> Fit General Linear Model
In Responses enter C3. In Factors enter C1 C2.
Click Ok.
$F_0=15.89$ with a P-value $=0.001\ltα=0.05$