Answer
Answer = 0.5465
Work Step by Step
Want to find P( z < 0 or z > 1.68)
1) P( z < 0) = 0.5
2) P( z > 1.68) = 1 - P( z < 1.68) = 1 - 0.9535 = 0.0465
3) Finally, P(z < 0 or z > 1.68) = 0.5 + 0.0465 = 0.5465
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