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The Mean of the Sample Average Yˉ\bar { Y } E(Yˉ)E ( \bar { Y } )

Question 43

Multiple Choice

The mean of the sample average Yˉ\bar { Y } , E(Yˉ) E ( \bar { Y } ) , is


A) 1nμγ\frac { 1 } { n } \mu _ { \gamma }
B) μy\mu_y
C) μyn\frac { \mu _ { y } } { \sqrt { n } }
D) σyμy\frac { \sigma _ { y } } { \mu _ { y } } for n > 30.

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