Auto Dealer Nights of the Week An automobile deaier 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 folowing data is gathered for four weeks. Test at the 0.01 significance level. given: SStotal = 38.92; within difference = 16,75 Nights of the week Thursday Monday Friday diffenence in sale withinnights (ssE dise to chance 6 2 2 1 11 cars 22 cars)edi ference in alos between the nights.(5ST) due to the night. 10 cars

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