(ii) The distribution of heights of students in a large class is roughly bell-shaped. The average height is 68 inches, and approximately 95% of the heights are between 62 and 74 inches. What is the standard deviation of height in the group of students.

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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(ii) The distribution of heights of students in a
large class is roughly bell-shaped. The
average height is 68 inches, and
approximately 95% of the heights are
between 62 and 74 inches. What is the
standard deviation of height in the group of
students.
Transcribed Image Text:(ii) The distribution of heights of students in a large class is roughly bell-shaped. The average height is 68 inches, and approximately 95% of the heights are between 62 and 74 inches. What is the standard deviation of height in the group of students.
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