Question: 8.25 Independent random samples from two normally distributed populations give the following results: nx = 10 x = 250 sx = 14 ny = 17

8.25 Independent random samples from two normally distributed populations give the following results:

nx = 10 x = 250 sx = 14 ny = 17 y = 165 sy = 23 Assume that the unknown population variances are equal and find a 95% confidence interval for the difference between population means.

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