It Is Important to Sponsors of Television Shows That Viewers

Short Answer

It is important to sponsors of television shows that viewers remember as much as possible about the commercials. The advertising executive of a large company is trying to decide which of two commercials to use on a weekly half-hour comedy. To help make a decision she decides to have 12 individuals watch both commercials. After each viewing, each respondent is given a quiz consisting of 10 questions. The number of correct responses is recorded and listed below. Assume that the quiz results are not normally distributed. Do these data provide enough evidence at the 5% significance level to conclude that the two commercials differ?
z-statistic = ______________
Reject if |z| > ______________
Conclusion: ______________
The data ______________ enough evidence at the 5% significance level to conclude that the two commercials differ