Question: Construct a 95% confidence interval for 1 - 2. Two samples are randomly selected from normal populations. The sample statistics are given below. n1 =

Construct a 95% confidence interval for 1 - 2. Two samples are randomly selected from normal populations.

The sample statistics are given below.

n1 = 11 n2 = 18

x1 = 4.8 x2 = 5.2

s1 = 0.76 s2 = 0.51

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