Question

The following waiting times and frequencies were recorded for customers checking out at a grocery store: Select an appropriate distribution, and determine the mean waiting time in minutes.Choose one answer.a. 8b. 2c. 1d. 4

Answer 1

SOLUTION

The table for this is shown below

From the table, the mean becomes

$\begin{gathered} mean(\bar{x})=\frac{\sum_^fx}{\sum_^f} \\ =\frac{367}{86} \\ =4.2674418 \end{gathered}$

Hence looking at the options, the answer is 4, option D