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(Solved): If the standard deviation of a random variable X is 30 and a random sample of size n is 15 obtain ...



If the standard deviation of a random variable X is 30 and a random sample of size n is​ 15 obtained, what is the standard deviation of the sampling distribution of the sample​ mean?


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SOLUTION: ACCORDING TO THE GIVEN DATA,

  STANDARD DEVIATION OF RANDOM VARIABLE   
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