Chapter 2.6, Problem 33E

To determine

To find: sum of four integers whose mean is 15.

Answer to Problem 33E

60

Explanation of Solution

Given information:

Mean or Average = 15

Total integers = 4

Calculation:

The formula of average is as follows:

  $\text{Average}=\frac{\text{Sum of observation}}{\text{Number of observations}}$

Put the values in the above formula and evaluate the sum of intergers as follows:

  $\begin{array}{c}\text{15}=\frac{\text{Sum of intergers}}{\text{4}}\\ \text{Sum of intergers}=15\left(4\right)\\ =60\end{array}$

Thus, the sum of integers is 60