Question: Find a 95% confidence interval for the difference between the following means: the mean total order cost for West customers and the mean total order

Find a 95% confidence interval for the difference between the following means: the mean total order cost for West customers and the mean total order cost for Northeast customers. Do the same for the other combinations: West versus Midwest, West versus South, Northeast versus South, Northeast versus Midwest, and South versus Midwest.

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Data Date Day Time Region Card Type Gender Buy Category Items Ordered Total Cost High Item 6Mar Tue Morning West ElecMart Female High 4 13697 7997 6Mar Tue Morning West Other Female Medium 1 2555 2555 ... View full answer

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