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Hi, step by step answer please! Thanks! 76. Let in and 3: denote the sample mean and variance 2 for the sample x1, , x

Hi, step by step answer please! Thanks!

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76. Let in and 3: denote the sample mean and variance 2 for the sample x1, , x\" and let xn+1 and sn+1 denote these quantities when an additional obser- vation xml is added to the sample. a. Show how in\" can be computed from in and xn+1v b. Show that n 2 2 n +1(x+l _i) nSn+l = (n _1)Si+ so that 5% +1 can be computed from Jan\

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