To estimate proportions using bootstrapping methods, report successes as 1 and failures as 0. Then follow the same procedures that we used to estimate a mean using bootstrapping. A random sample of 85 adult Americans was asked, "Have you ever ended a budding relationship because a kiss did not go well?" Go to www.pearsonhighered.com/sullivanstats to obtain the data file 9_5_13 using the file format of your choice for the version of the text you are using. In the dataset, 0 represents "No" and 1 represents "Yes".

(a) What is the sample proportion of adult Americans who have ended a relationship because a kiss did not go well?

(b) Explain why a 95% confidence interval could be constructed using the normal model. Then find the interval. Compare your results to part (b)?