Estimating the mean amount spent on birthday gifts

Reference no: EM13102375

A study was conducted to estimate the mean amount spent on birthday gifts for a typical family having two children. A sample of 195 was taken, and the mean amount spent was $210.97. Assuming a standard deviation equal to $41.63, find the 90% confidence interval for m, the mean for all such families (show all work).

Reference no: EM13102375

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