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Let x stand for the length of an individual screw. 100 screws were sampled at a time. The population mean is 2.5 inches and the

Let x stand for the length of an individual screw. 100 screws were sampled at a time. The population mean is 2.5 inches and the population standard deviation is 0.2 inches.

What is the mean of the sampling distribution of sample means?

2.5

0.2

0.02

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