Question: A variable has a mean of 100 and a standard deviation of 16. Four observations of this variable have a mean of 108 and a

A variable has a mean of 100 and a standard deviation of 16. Four observations of this variable have a mean of 108 and a sample standard deviation of 12. Determine the observed value of the
a. Standardized version of x-bar.
b. Studentized version of x-bar.

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