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If the population is normally distributed with a mean of 50 and a standard deviation of 20 years, the Z score for age 15 or

If the population is normally distributed with a mean of 50 and a standard deviation of 20 years, the Z score for age 15 or less is Select one: O a. 1.5 O b. 1.75 O c. 2.0 O d. 2.5

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