Chapter 11.6, Problem 29SR

To determine

To find: Thenumber of students is less than $62\text{in}$ tall.

Answer to Problem 29SR

The number of students is less than $62\text{in}$ tallis $27$ .

Explanation of Solution

Given information:

The total number of students are $1080$ , the mean of the height is $66\text{in}$ , and the standard deviation is $2\text{in}$ .

From the graph, the percentage for less than $62\text{in}$ tall are $2.35\%\text{and 0}\text{.15\%}$

The number of students is less than $62\text{in}$ tallis calculated as,

  $\begin{array}{c}N=2.35\%\times 1080+0.15\%\times 1080\\ =2.5\%\times 1080\\ =27\end{array}$

Thus, the number of students is less than $62\text{in}$ tallis $27$ .