A simple random sample of 64 8th graders at a large suburban middle school indicated that 88% of them are involved with some type of after-school activity. Find the 98% confidence interval that estimates the proportion of them that are involved in an after-school activity.

Answer rating: 100% (QA)

n 64 C 98 11 1098 002 22 001 Zd2 ... View the full answer