Chapter 3, Problem 1CQQ

Find the mean of these times that American Airlines flights used to taxi to the Los Angeles terminal after landing from a flight: 12 min, 8 min, 21 min, 17 min, 12 min. (Data are from Data Set 15 in Appendix B.)

To determine

To find: The mean time that American Airlines flights used to taxi to the Los Angeles terminal after landing from a flight.

Answer to Problem 1CQQ

The mean time that American Airlines flights used to taxi to the Los Angeles terminal after landing from a flight is 14min.

Explanation of Solution

Given info: The data shows that the times that American Airlines flights used to taxi to the Los Angeles terminal after landing from a flight.

Calculation:

The formula for mean is,

$\overline{x}=\frac{{\displaystyle \sum x}}{n}$

Mean time is,

$\begin{array}{c}\overline{x}=\frac{12+8+21+17+12}{5}\\ =\frac{70}{5}\\ =14\end{array}$

Thus, the mean time that American Airlines flights used to taxi to the Los Angeles terminal after landing from a flight is 14min.