Use the data in Ex 9.17, but pretend that the sample sizes were 50 and 50.Do the data provide significant evidence, at the 3% level, that the population mean recall for the video-only group is higher than the population mean recall for the A/V group?(zobs =0.973, z.03 =1.88 ) Children's recall of TV ads. Children's recall and rec-ognition of television advertisements was studied in theJournal of Advertising (Spring 2006). Two groups of chil-dren were shown a 60-second commercial for SunkistFunFruit Rock-n-Roll Shapes. One group (the A/Ngroup) was shown the ad with both audio and video; thesecond group (the video-only group) was shown only thevideo portion of the commercial. Following the viewing,the children were asked to recall 10 specific items fromthe ad. The number of items recalled correctly by eachchild is summarized in the accompanying table. The re-searchers theorized that "children who receive an audio-visual presentation will have the same level of mean re-call of ad information as those who receive only the visualaspects of the ad." Video-Only GroupAN Group= 20X2 :20n2X11.983.703.30S1S22.13

Name: Use the data in Ex 9.17, but pretend that the sample sizes were 50 and
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Description: Use the data in Ex 9.17, but pretend that the sample sizes were 50 and 50.Do the data provide significant evidence, at the 3% level, that the population mean recall for the video-only group is higher than the population mean recall for the A/V group?