(b) A tea company appoints four salesmen A, B, C and D and observes their sales in three months, April, May and June: Months Salesmen A B C D April May June XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX...

(b)
A tea company appoints four salesmen A, B, C and D and observes their sales in three months, April, May and June:
Months  Salesmen
A B C D
April  May June
36 28 26
36 29 28
21 31 29
35 32 29
4
i.
Prepare a two – way  analysis of variance table
ii.  Name the blocking variable and the treatment in this experiment.
iii.  Test at the 5% level of significance the null hypothesis that there is significant difference in sales made by the four salesmen