statistics

the distribution of heights of American women aged 18 to 24 is approximately normally distributed with mean 65.5 inche and standard deviation 2.5 inches. what is the probability that a randomly seleted woman is between 60 and 64 inches tall?

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  1. Use z-scores and a z-table to determine your probability.

    Formula:
    z = (x - mean)/sd

    Find both z-values:
    z = (60 - 65.5)/2.5
    z = (64 - 65.5)/2.5

    Once you calculate both z-values, check a z-table for the probability between those two values.

    I hope this will help.

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