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Confidence Interval for 2-Means (2 Sample T-Interval) Given two independent random samples with the following results:...

Confidence Interval for 2-Means (2 Sample T-Interval)

Given two independent random samples with the following results:

n1=11 n2=17
x1¯=118 x2¯=155
s1=18 s2=13


Use this data to find the 99% 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. Round values to 2 decimal places.

Lower and Upper endpoint?

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