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For a population with a mean equal to 200 and a standard deviation equal to 25, calculate the standard error of the mean for the following sample sizes.
?a) 10
?b) 30
c) 50
?a) The standard error of the mean for a sample size of 10 is _____
?(Round to two decimal places as? needed.)
?b) The standard error of the mean for a sample size of 30 is ___
c) The standard error of the mean for a sample size of 50 is ____
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