In an effort to improve a statistics course, we want to interview randomly chosen students about their attitudes toward the class. There are 800 students currently enrolled, and six instructors who teach sections of the course. To make sure that students from each instructor are equally represented in the sample, we will first take random samples of size 10 from each of the six classes separately, and then combine these to get the overall sample of students. This type of sample is called a random sample.

Do social recommendations increase ad effectiveness? a study of online video viewers compared viewers who arrived at an advertising video for a particular brand by following a social media recommendation link to viewers who arrived at the same video by web browsing. data were collected on whether the viewer could correctly recall the brand being advertised after seeing the video. the results are given below.correctly recalled the brandarrival 409153browsing20484b. conduct the hypothesis test, using the 0.025 level of significance.what is the value of the test statistic? χ2stat=what is the p-value? p-value=is this value significant atα=0.025?