The Number of Electrical Outages in a City Varies from Day

question 68

Multiple Choice

The number of electrical outages in a city varies from day to day.Assume that the number of electrical outages (x) in the city has the following probability distribution.
$$\begin{array} { c c } x & f ( x ) \\\hline 0 & 0.80 \\1 & 0.15 \\2 & 0.04 \\3 & 0.01\end{array}$$
The mean and the standard deviation for the number of electrical outages (respectively) are

• A) 2.6 and 5.77
• B) 0.26 and 0.577
• C) 3 and 0.01
• D) 0 and 0.8

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Definitions:

Food Intolerance

An adverse physical reaction to certain foods, not involving the immune system, that can cause discomfort or illness.

Constipation

A common condition where a person experiences difficulty in evacuating bowels, often leading to infrequent or hard stool.

Lactose Intolerance

A condition where the body lacks the enzyme needed to digest lactose, leading to digestive issues after consuming dairy products.

Rectum

The final straight segment of the large intestine, ending at the anus, where feces are stored before elimination.