Yost Transportation Research plans to estimate the average monthly transportation costs for workers who commute daily from northern New Jersey into New York City. Study coordinators want to be able to construct a 95% confidence interval that is no wider than ±$2. How many commuters should be included in the sample? Assume a pilot sample gives an estimate of $30 for the population standard deviation.

Answer rating: 100% (QA)

We have given that Margin of error E 2 Population standard deviati... View the full answer