Suppose you want to test the claim the the paired sample data given below come from a population for which the mean difference is la = 0. 89 89 50 82 89 54 71 y 67 71 93 83 72 88 64 Use a 0.01 significance level to find the following: (a) The mean value of the differnces d for the paired sample data d (b) The standard deviation of the differences d for the paired sample data = Ps (c) The t test statistic t =

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