Suppose a researcher wishes to use stratified random sampling to select a representative sample of 100 people from a population that has the following characteristics: 
Suppose the researcher mails the survey to the 100 people in the representative sample and only 50 of the people return a completed survey.Can you state that this sample of 50 represents the population? Why or why not?
Definitions:
Profit-Volume Chart
A graphical representation that shows the relationship between a company's profits and its volume of sales, highlighting the break-even point.
Operating Profit
Income generated from core business operations, excluding revenue and expenses from non-operating activities.
Sales Mix
The combination or ratio of different products or services that a company sells, impacting its profitability.
Distribution of Sales
The analysis or allocation of sales among different categories, regions, or periods to understand the pattern or strategy of sales.
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