A random sample of 250 men yielded 175 who said they'd ridden a motorcycle at some time in their lives, while a similar sample of 215 women yielded only 43 who had done so. Find a 99% confidence interval for the difference between the proportions of men and women who have ridden motorcycles.
0.5 plus/minus 0.103
0.5 plus/minus 0.078
4688 plus/minus 0.085
5 plus/minus 0.085
0.5 plus/minus 0.112
1 answer
0.5 plus/minus 0.112