ques 1) One-way ANOVA is performed on independent samples taken from three normally distributed populations with equal variances. The following summary statistics were calculated:

n1 = 6 x1 = 50 s1 =5.2 (NOTE: xi designates a sample mean)

n2 = 14 x2 = 55 s2 = 4.9

n3 = 5 x3 = 51 s3 = 5.4

The grand mean equals:

a.

52.0.

b.

50.0.

c.

53.0.

d.

52.3. ques 2) The numerator or MSTR degrees of freedom is 4 and the denominator or MSE degrees of freedom is 15. The total number of observations in the completely randomized design must equal

a.

80.

b.

20.

c.

24.

d.

19.

e.

25.