In a survey of women the mean height was 62.5 inches with standard deviation of 2.82 inches. What height represents the 95th percentile? What height represents the first quartile?

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Mathematics

Esperanza Kemp

5 February, 00:46

In a survey of women the mean height was 62.5 inches with standard deviation of 2.82 inches. What height represents the 95th percentile? What height represents the first quartile?

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Micaela Wilkerson · Answer 1

Example: In a survey of women in a certain country (ages 20-29) the mean height 63.7 inches with a standard deviations 2.65 inches. What is the height that represent 85 perentile? what is the height represent First quartile

answer: in a survey of women in a certain country (ages 20-29) the mean height 63.7 inches with a standard deviations 2.65 inches.

What is the height that represent 85 percentile?

Find the z-value of the 85th percentile::

invNorm (0.85) = 1.0364

Find the corresponding height value::

h = z*s + u

h = 1.0364*2.65 + 63.7

h = 66.47"