Chapter 12-13 Study Guide:

P(x > 300) = normalcdf(300,999,250,15) = .0004 (can also do with z-scores) P(240 < x < 260) = normalcdf(240,260,250,15) = .4950 (can also do with z-scores) (draw picture with area of .75 to left of boundary) boundary = invnorm(.75,250,15) = 260.1 yards. OR. From table: z = .67 = . Solving for x = 260.05 yards (draw picture with area of .10 to ... ................
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