All possible random samples of 200 middle managers are selected from a population for a study concerning their mean annual income.The population standard deviation is computed to be $2,248.5.What is the standard deviation of the sampling distribution of the means?
A)$47.42
B)$11.24
C)$158.99
D)$57.86

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The Answer of All possible random samples of 200 middle managers are selected from a population for a study concerning their mean annual income.The population standard deviation is computed to be $2,248.5.What is the standard deviation of the sampling distribution of the means?
A)$47.42
B)$11.24
C)$158.99
D)$57.86

All Possible Random Samples of 200 Middle Managers Are Selected