Exhibit 5-11 the Random Variable X Is the Number of Occurrences of Occurrences

question 18

Multiple Choice

Exhibit 5-11
The random variable x is the number of occurrences of an event over an interval of ten minutes. It can be assumed that the probability of an occurrence is the same in any two time periods of an equal length. It is known that the mean number of occurrences in ten minutes is 5.3.
-Refer to Exhibit 5-11. The expected value of the random variable x is

• A)2
• B)5.3
• C)10
• D)2.30

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Definitions:

Bacterial Infection

An illness caused by harmful bacteria entering and multiplying in the body.

Menstruation

The regular discharge of blood and mucosal tissue from the inner lining of the uterus through the vagina, part of the menstrual cycle.

Follicle

A small secretory cavity or gland, but in the context of biology, often refers to the sac in the ovary that contains the oocyte.

Menstrual Synchrony

The purported phenomenon where women who live together or are in close proximity experience their menstrual cycles aligning over time.