Souvenir hats T-shirts and jackets are sold at a rock concert Three hats, two T-shirts, and one jacket cost $140. Two hats, two T-shirts, and two Jackets cost $170. One hat three T-shirts, and two jackets cost $180. Let x represent the number of souvenir hats sold, y represent the number of T-
shirts sold, and z represent the number of jackets sold.

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?

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Given a binomial distribution variable with n=20 and p=0.60 find the following possibilities using the binomial table a) p(x < 13) b) p x > 15) c) p(x = 17) d) p(11 < x < 14) e) p(11 < x < 14)