A researcher finds that of 1000 people who said that they attend a religious service at least once a week, 31 stopped to help a person with car trouble. Of 1200 people interviewed who had not attended...

A researcher finds that of 1000 people who said that they attend a religious service at least once a week, 31 stopped to help a person with car trouble. Of 1200 people interviewed who had not attended a religious service at least once a month, 22 stopped to help a person with car trouble. At the 0.05 significance level, test the claim that the two proportions are different.


Test and CI for Two Proportions
Sample X N Sample p
1 31 1000 0.031
2 22 1200 0.0183
Difference = p (1) - p (2)
Estimate for difference: 0.0127
Test for difference = 0 (vs ≠ 0): Z = 1.93 P-Value = 0.054