Discussion:
Q: A researcher selected a sample of 50 residents from each of three different cities to determine if they were willing to participate in a medical experiment. At a = .05, test the claim that the proportions who will participate are equal.
Residents City 1 City 2 City 3
Willing to participate 20 12 22
Not willing to participate 30 38 28
Total 50 50 50
A) There is not evidence to reject the claim that the proportions are equal because the test value 4.861 < 5.991
B) There is evidence to reject the claim that the proportions are equal because the test value 12.592 > 1.042
C) There is evidence to reject the claim that the proportions are equal because the test value 5.991 > .4861
D) There is evidence to reject the claim that the proportions are equal because the test value 5.991 > 1.04