Question 360539
(a) 2+1=3

(b)500+1=501

(c)the critical value of F is F(0.95, df1=2, df2=20) =3.49 (check F table)

(d) H0: mu1=mu2=mu3 (null hypothesis)
Ha: at least one of the means is different. (alternative hypothesis)

(e)We reject the null hypothesis. The means are not all equal. At least one is different.