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7. Find the z-score corresponding to an area of 0.4013 under a standard normal probability distribution as shown below. A. 0.25 B. -0.25 C. 1.31

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7. Find the z-score corresponding to an area of 0.4013 under a standard normal probability distribution as shown below. A. 0.25 B. -0.25 C. 1.31 D. -0.5087 8. If z is a standard normal variable, find the probability that z lies between 0.7 and 1.98. A. 0.6812 B. 0.2334 C. 0.2181 D. 0.9511

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