In recent years, there has been a great deal of interest in the ads that appear during a widely watched sporting event. These ads vary in length with most lasting 30 seconds or 60 seconds. The data table available below contains the ad length and ad scores (based on a 10-point maximum) from a recent event. Complete parts (a) through (e) below. Click the icon to view the data containing ad scores for 30-second ads and 60-second ads. a. For the 30-second ads and the 60-second ads separately, construct a 95% confidence interval estimate for the population mean ad score. The 95% confidence interval estimate for the population mean ad score for 30-second ads is (Round to two decimal places as needed.) Sus