# Random Variables Factors

The standard error of the sample mean is equal to 5 when n=25. If he sample size increases by a factor of four, how will the standard error change?

A random variable follows the student's t distribution. The probability that it will be positive is

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The standard error of the sample mean is equal to 5 when n=25. If he sample ...

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The standard error of change are determined.

$2.19