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uiz 4 A random sample of 144 observations has a mean of 20, a median of 21, and a mode of 22. The population standard

uiz 4

A random sample of 144 observations has a mean of 20, a median of 21, and a mode of 22. The population standard deviation is known to equal 4.8. The 95.44% confidence interval for the population mean is

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