Manuelperez1782 Manuelperez1782

25-05-2023
Mathematics

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A normal population has a mean of 20.0 and a standard deviation of 4.0.

a). Compute the z value associated with 25.0. (Round your answer to 2 decimal places.)

b). What proportion of the population is between 20.0 and 25.0? (Round z-score computation to 2 decimal places and your final answer to 4 decimal places.)

c). What proportion of the population is less than 18.0? (Round z-score computation to 2 decimal places and your final answer to 4 decimal places.)

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