8.38 Texts Sent Per Day and Favorite Way to Communicate Exercise 1.24 introduces a survey given to a sample of high school seniors in Pennsylvania. Two of the variables in the survey are TextsSent, the number of text messages sent per day, and Communicate, the student's favorite way to communicate with friends (App, In person, Phone, or Text). The data are stored in PASeniors. a. Use technology to nd the summary statistics for each of the four categories. Which group has the largest mean number of texts sent? Which group has the smallest? b. Use technology to conduct an AN OVA test. What is the F-statistic? What is the pvalue? c. What is the conclusion of the test? Communicate TextsSent Text 249 Phone 36 App 67 In person 96 Total 448 Group Means Variance Text 99.84274194 99089.72915 18310.2948 4540953.111 Phone 109.6388889 31851.21784 15482.17515 541876.1304 App 40.6119403 103386.5835 7223.04344 476720.867 In person 46.80851064 105086.6146 7151.076389 679352.2569 Overall Mean 79.89403974 Overall Variance 14721.00202 SSG 339414.1451 SSE 6238902.365 SSTotal 6580287.904 Source df SS MS F-Statistic p-value Groups 3 339414.1451 113138.0484 8.051623593 Error 444 6238902.365 14051.5819 Total 447 6580287.904