In: Statistics and Probability
Given two independent random samples with the following results:
n1=8 x‾1=109 s1=35 n2=12 x‾2=145 s2=20
Use this data to find the 98% confidence interval for the true difference between the population means. Assume that the population variances are not equal and that the two populations are normally distributed.
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Solution:
• 98% CI for the true difference between the population mean is (−73.16, 1.16).
Calculation: