F(z) denotes the cumulative normal distribution function. Refer to a calculator or computer algebra system to obtain
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F(z) denotes the cumulative normal distribution function. Refer to a calculator or computer algebra system to obtain values of F(z).
Show that the area of region B in Figure 9 is equal to 1 − F(1.5) and compute its value. Verify numerically that this area is also equal to F(−1.5) and explain why graphically.
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y 55 A 100 120 B 165 X
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