The Probability Is 0

question 7

Multiple Choice

The probability is 0.2 that a person shopping at a certain store will spend less than $20. For groups of size 11, find the mean number who spend less than $20.

• A) 4.0
• B) 8.8
• C) 16.0
• D) 2.2

---

Definitions:

Deviations

Differences between observed values and some reference value, often the mean of the dataset, indicating the spread of the data.

Mean Squared

A statistical measure of the average of the squares of the errors or deviations, that is, the difference between the estimator and what is estimated.

Standard Deviation

A measure of the amount of variation or dispersion in a set of values.

Spread Out

Describes data that is dispersed widely, showing a large variation among its values, often seen in distributions with high variance.