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A sample of 10 observations is selected from a normal population for which the population standard...

A sample of 10 observations is selected from a normal population for which the population standard deviation is known to be 4. The sample mean is 24. (Round your answers to 3 decimal places.)
(a) The standard error of the mean is .
(c)

The 99 percent confidence interval for the population mean is between ___ and ___.
Math   Statistics-And-Probability   
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