In Exercises 23 and 24, construct the indicated confidence interval for m1 - m2. Assume
Chapter 8, Problem 24(choose chapter or problem)
In Exercises 23 and 24, construct the indicated confidence interval for m1 - m2. Assume the populations are approximately normal with unequal variances.Elephants To compare the mean lifespans of African elephants in the wildand in a zoo, you randomly select several lifespans from both locations. Theresults are shown at the left. Construct a 95% confidence interval for thedifference in mean lifespans of elephants in the wild and in a zoo. (Adaptedfrom Science Magazine)
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