Chapter 6.2, Problem 2.1CYU

To determine

To find: The mean of T and interpret it.

Answer to Problem 2.1CYU

The mean of T is 1.8.

Explanation of Solution

Given:

  $\begin{array}{l}{\mu }_X=1.1,{\sigma }_X=0.943\\ {\mu }_Y=0.7,{\sigma }_Y=0.64\\ T=X+Y\end{array}$

Calculation:

The mean of T can be calculated as:

  $\begin{array}{c}{\mu }_T={\mu }_X+{\mu }_Y\\ =1.1+0.7\\ =1.8\end{array}$

Interpretation:

It is expected that 1.8 of the cars would be sold or leased out in the first hour of business.