Chapter 13, Problem 11P

The F Distribution and the F-Ratio

Use the following information to answer the next eight exercises. Groups of men from three different areas of the country

are to be tested for mean weight. The entries in Table 13.13 are the weights for the different groups.

Group 1	Group 2	Group 3
216	202	170
198	213	165
240	284	182
187	228	197
176	210	201

Table 13.13

What is the df for the numerator?