The Figure Shows a Normal N(400, 23) Distribution

question 40

Multiple Choice

The figure shows a normal N(400, 23) distribution. Find the x value for the shaded area. C.2 we get P(z < -1.645) = .05, so x = µ + zσ = 400 - 1.645(23) = 362.2, or from Excel =NORM.INV(0.05,400,23) = 362.2.

• A)379.1
• B)362.2
• C)355.7
• D)347.6

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