Consider the Following Information If N = 5, the Mean Square Due to Error

Multiple Choice

Consider the following information. $\begin{array}{ll}\mathrm{SSTR}=6750 & H 0: \mu 1=\mu 2=\mu 3=\mu 4 \\\mathrm{SSE}=8000 & H_{\mathrm{a}}: \text { At least one mean is different }\end{array}$
If n = 5, the mean square due to error (MSE) equals

A) 400.
B) 500.
C) 1687.5.
D) 2250.