A Study Conducted by Uni-Mart, a Mail-Order Department Store, Reveals

question 32

Short Answer

A study conducted by Uni-Mart, a mail-order department store, reveals that the time intervals in minutes between incoming telephone calls on its toll-free 600 line between 10 A.M. and 3 P.M. are exponentially distributed with probability density function .
​
What is the probability that the time interval between successive calls is more than 5 min? Give the answer to four decimal places, if necessary.

---

Definitions:

Meta-Analysis

A technique to review findings in the literature involving the use of specific statistical methods in integrating the findings from different empirical studies.

Narrative Review

A technique for literature reviews in which the author locates and reports on all the studies he or she can find, providing a qualitative summary.

Spatial Abilities

The ability to comprehend, rationalize, and recall the spatial relationships between objects or areas.

Mathematical Abilities

The capacity to perform and understand various mathematical operations, concepts, and problem-solving techniques.