The number of cars sold annually by used car salespeople is normally distributed with a standard deviation

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The number of cars sold annually by used car salespeople is normally distributed with a standard deviation of 15. A random sample of 15 sales-people was taken, and the number of cars each sold is listed here. Find the 95% confidence interval estimate of the population mean. Interpret the intervalestimate.

The number of cars sold annually by used car salespeople
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