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 signifi cance, test the claim that the amount contributed to the library fund is independent of ethnic group.

Number of People Making Contribution Ethnic Group

$1–

50

$51–

100

$101–

150

$151–

200 Over

$200 Row Total 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 99 1121