A study by Allstate Insurance Co. finds that 82% of teenagers have used mobile phones while driving. Suppose this study was based on a random sample of 50 teen drivers. A 95% confidence interval was found to be [79%, 85%].

Select one of these

• A.We can be 95% certain that the average proportion of teens who drive and use their phones lies between [79%, 85%].
• B.Using the same data, a 99% confidence interval is calculated, it should contain both 74% and 84%.
• C.Another sample of 50 teens is collected and a 99% confidence interval is calculated for this new data. This, new, confidence interval should be the same the previous.
• D.We can be 90% certain that the average proportion of teens who drive and use their phones lies between [79%, 85%].