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A normal population has a mean of 18.5 and a standard deviation of 4. Refer to the z table. What proportion of the population is

A normal population has a mean of 18.5 and a standard deviation of 4. Refer to the z table. What proportion of the population is less than 18.0?(Roundz-score computation to 2 decimal places and the final answer to 4 decimal places.)

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