Question: Construct a 90% confidence interval for 12 with the sample statistics for mean cholesterol content of a hamburger from two fast food chains and confidence

Construct a 90% confidence interval for 12 with the sample statistics for mean cholesterol content of a hamburger from two fast food chains and confidence interval construction formula below. Assume the populations are approximately normal with unequal variances.

Stats

x1=67mg,s1=3.76mg,n1=20 x2=50mg,s2=2.14mg,n2=9

use the formula when Confidence intervalwhen variancesare not equal

d.f is the smaller of n1-1 and n2-1

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