A horticulturist wants to test the effectiveness of four types of fertilizer on the growth rate of Bermuda grass.Six sections of grass are randomly assigned to each of the four fertilizer types,and the rate of growth for each section is measured.How many degrees of freedom does the treatment sum of squares have? How about the error sum of squares?
A)df-treatment = 3; df-error = 21
B)df-treatment = 3; df-error = 20
C)df-treatment = 4; df-error = 20
D)df-treatment = 5; df-error = 21
E)df-treatment = 5; df-error = 20