The following table summarizes the ages of the 400 richest Americans. Suppose we select one of these individuals. Find the probability that the selected individual is less than 80 years old. 
Definitions:
Need Awareness
The recognition by potential customers of a desire or requirement that could be satisfied by a product or service.
Target
An objective or goal that an individual, group, or organization aims to achieve within a specified timeframe.
New Home
A new home refers to a residential property that has recently been constructed and has never been lived in before.
Need Awareness
The initial stage in the purchasing process where a customer becomes conscious of a problem or need that requires a solution.
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