In a one-factor anova with n1=7, n2=6, n3=5, n4=5, and n5=7, the sample standard deviations were s1= 12, s2= 24, s3= 16, s4= 46, s5= 27.
For hartley's test: (a) state the hypothesis, (b) calculate the degrees of freedom, (c) find the critical value at the 5 percent level of significance, (d) calculate hartley's test statistic. (e) what is your conclusion