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

question 65

Multiple Choice

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 9 A.M. and 2 P.M. are exponentially distributed with probability density function . What is the probability that the time interval between successive calls is more than 6 min? Round your answer to four decimal places. ​

• A) 0.4899
• B) ​0.8869
• C) ​0.2950
• D) ​0.1737
• E) ​0.8981

---

Definitions:

Testosterone

A primary male sex hormone responsible for the development of male secondary sexual characteristics, although it is also present in females.

Estrogen

A group of hormones that play a critical role in female reproductive and sexual development, as well as impacting a variety of other bodily functions.

Biological Advantage

A natural benefit or edge that enhances an organism's ability to survive, reproduce, or adapt to its environment.

Physically Vulnerable

Pertains to individuals or groups who are at an increased risk of physical harm or health issues due to various factors.