Question

You take a random sample of size 50 from Population1 and a random sample of size 100 from Population 2. The mean of the first sample is 1550; the sample standard deviation is 220. The mean of the second sample is 1270; the sample standard deviation is 180. Show the 95% confidence interval estimate of the difference between the means of the two populations represented here.


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  • CreatedJuly 16, 2015
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