The numerator or MSTR degrees of freedom are 4 and the denominator or MSE degrees of freedom are 20. The total number of observations in the completely randomized design must equal:
A)24.
B)20.
C)19.
D)25.
E)80.

Question

Quizplus · Accepted Answer

Using the formula for the degrees of freedom in a completely randomized design, we have:

dfTotal = dfMSTR + dfMSE
dfTotal = 4 + 20
dfTotal = 24

Therefore, the total number of observations must be 24, which corresponds to choice D.

The Numerator or MSTR Degrees of Freedom Are 4 and the Denominator