The Random Variable X Is the Number of Houses Sold

question 30

Multiple Choice

The random variable x is the number of houses sold by a realtor in a single month at the Sendsom's Real Estate Office.Its probability distribution is as follows.Find the standard deviation of the number of houses sold.

• A)6.86
• B)2.62
• C)1.62
• D)2.25
• E)4.45

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Definitions:

Average Amount

The sum of values divided by the number of values, commonly known as the mean.

Alternative Hypothesis

The alternative hypothesis is a statement in statistics that contradicts the null hypothesis and indicates that there is a significant difference between specified populations.

Null Hypothesis

A statistical hypothesis that assumes no significant difference or effect in a given experiment or study, serving as a starting point for testing.

SRS

An abbreviation for Simple Random Sample, a sampling method where every member of the population has an equal chance of being selected.