Find ?_x,if ? = 400 $\mathrm { P } ( \bar { X } < 396 ) = .0228$

Multiple Choice

Find ?_x,if ? = 400, $\mathrm { P } ( \bar { X } < 396 ) = .0228$
And n = 100.

A) 0.20
B) 200
C) 20
D) 2.00