Example 3 Cookie Data Fall 2003 Brand A Sams Choice Brand

Example 3

Cookie Data – Fall 2003

Brand A = Sam’s Choice

Brand B = Chips Delux

Brand C = Chips Ahoy

Sam’s Choice, 10 Cookies

            Range: 6 – 23

            Mean number of chips = 16.1

            Variance = 16.4

Chips Delux, 8 Cookies

            Range: 6 – 30

            Mean number of chips = 19.3

            Variance = 27.8

Chips Ahoy, 7 Cookies

            Range: 11 – 23

            Mean number of chips = 17.1

            Variance = 12.4

Entire sample

Grand Mean = 17.5

Solution

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