An oil company is interested in estimating the true proportion of female truck drivers based in five southern states.

 An oil company is interested in estimating the true proportion of female truck drivers based in five southern states. A statistician hired by the oil company must determine the sample size needed in order to make the estimate accurate to within 3% of the true proportion with 95% confidence. What is the minimum number of truck drivers that the statistician should sample in these southern states in order to achieve the desired accuracy? a) 1079b) 1060c) 1053d) 1074e) 1068f) None of the above

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. a) [0.836, 0.841]b) [0.786, 0.774]c) [0.786, 0.974]d) [0.706, 0.974]e) [0.686, 0.924]f) None of the above