=+12.15. A study was made of a sample of 100 female students at a large college on the relative popularity of four experimental types of service clubs having essentially the Store no.

Size of store

(1000 ft2

)

Food sales

($10,000)

Nonfood sales

($10,000)

1 35 305 35 2 22 130 98 3 27 189 83 4 16 175 76 5 28 101 93 6 46 269 77 7 56 421 44 8 12 195 57 9 40 282 31 10 32 203 92 Product A B C D E F G H I J Independent female ranks 8 9 5 6 1 2 7 4 10 3 Drug 1 2 3 4 5 6 7 A 7 10 7 9 8 8 8 B 7 6 58757 C 3 7 35463 D 4 3 21010 492 CHAPTER 12 same goals. The types differed only with respect to the difficulty of achieving membership, with type I having no membership requirements, ... , and type IV having very rigid and formidable membership requirements.