Chapter 12.5, Problem 3Q

Three air-to-surface missile launchers are tested for their accuracy. The same gun crew fires four rounds with each launcher, each round consisting of twenty missiles. A “hit” is scored if the missile lands within ten yards of the target. The following table gives the number of hits registered in each round.

Number of Hits per Round
Launcher A	Launcher B	Launcher C
13	15	9
11	16	11
10	18	10
14	17	8

Compare the accuracy of these three launchers by using the analysis of variance after making a suitable data trans-formation. Let $a=\mathrm{0.05.}$