If you were to construct a 99% confidence interval like the 95% confidence interval you constructed in #18 by testing different values for π and seeing whether or not they are plausible, how would the width of the 99% confidence interval compare to that of the 95% confidence interval? Find this 99% confidence interval to back up your claim.

Let’s use our 3S strategy to help us investigate how much evidence the sample data provide to support our conjecture that a majority of 16- to 17-year olds have talked on their cell phone while driving.