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Which cell phone service has the highest rating The data in represent the mean ratings for Verizon, AT&T, T-Mobile and Sprint in 19 different cities Source Data extracted from Best Cell-Phone

Which cell phone service has the highest rating? The data in represent the mean ratings for Verizon, AT&T, T-Mobile, and Sprint in 19 different cities. Source: Data extracted from “Best Cell-Phone Service,” Consumer Reports, January 2009, pp. 28–32. a. At the 0.05 level of significance, determine whether there is evidence of a difference in the mean cell rating for the four cell phone services. b. If appropriate, use the Tukey procedure to determine which cell phone services’ mean ratings differ. Again, use a 0.05 level of significance.

Jun 20 2020 View more View Less

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