Three different sales strategies are being tested to observe which methods produce higher sales. Five salespeople were assigned to each method, and after two months the number of units sold appears below.

Method A Method B Method C

15 16 23

17 18 22

20 14 21

18 13 21

18 12 24

Set up a hypotheses and analyze whether or not the methods produce the same mean results. Analyze this one-way analysis of variance and interpret your results. Also explain how this experiment ideally should have been designed.