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Business 210 4.23 Chapter 12 Auto Dealer Nights of the Week An automobile dealer is open three nights a week. The owner would like to know if there is a difference in the mean number of cards sold on the three nights. The following data is gathered for four weeks. Test at the 0.01 significance level. given: SStotal = 38.92; within difference= 16,75 Monday Nights of the week Friday Thursday 4 difference in sales withinnights: (SSE) HNAW due to chance + 10 cars 11 cars 22 cars)= difference in sales between He mights. ( SST ) due to the night