A study of stress on the campus of your university reported a mean stress level of76(on a 0 to100 scalewith a higher score indicating more stress) with a margin of error of5for95% confidence.The study was based on a random sample of81undergraduates.

Give the 95% confidence interval.

(_____,_____)

If you wanted 99% confidence for the same study, would your margin of error be greater than, equal to, or less than5? Explain your answer.