Question

15 Correct Given two independent random samples with the following results: n = 13 = 142 12 = 165 $ = 13 Use this data to find the 98% confidence interval for the true difference between the population means. Assume that the population variances are equal and that the two populations are normally distributed Copy Data Step 1 of 3 : Find the point estimate that should be used in constructing the confidence interval. Answer How to enter your answer Tables Keypad Keyboard Shortcuts

Answer 1

3,313 - 13t11-2 > Giren Summary Statistics are na 2 13 sya.142, ཅ) \། Xales, S2214 Since the assumption of population rariance are equal and that the two population are no normally distributed The pooled varian is given as sp2 a (nara) 3,² tong-1) 3,2 Mitna = (13-1) (13)2 + (11-1)*(1432 n2 12 x 169 tlox 996 22 12 2028 + 1960 22 3988 22 Sp2 181.272727 The anse degree of freedom dofanitna-2= 13+1 1.02 dfa22 :: 98"), confidence internal for true difference for population mean is (Min Malt (Cão atz) I talpa sp )

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