Sociology Ethnic Groups

After a large fund drive to help the Boston City Library, the following information was obtained from a random sample of contributors to the library fund. Using a 1% level of significance, test the claim that the amount contributed to the library fund is independent of ethnic group.

Ethnic Group Number of People Making Contribution Row Total
$1–50 $51–100 $101–150 $151–200 Over $200
A 83 62 53 35 18 251
B 94 77 48 25 20 264
C 78 65 51 40 32 266
D 105 89 63 54 29 340
Column Total 360 293 215 154

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