2. Is the mean of the age distribution closer to 15, 20, or 25 years? Explain your answer.
1 answer:
Answer:
the mean of the age distribution is 20
Step-by-step explanation:
Question is
A local utility company wanted to gather data on the age of air conditioners that people have in their homes. The company took a random sample of 200 residents of a large city and asked if the residents had an air conditioner, and if they did, how old it was. Below is the distribution in the reported ages of the air conditioners.
the graph is attached below
find the mean of the age distribution closer to 15, 20, or 25 years
In the given graph the distribution is centered at 20
So the mean of the age distribution is 20
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Given:
The system of inequalities is:
To find:
The graph of the given system of inequalities.
Solution:
We have,
The related equations are:
Table of values for the given equations is:
0 1 -3
3 0 3
Plot (0,1) and (3,0) and connect them by a straight line to get the graph of .
Similarly, plot (0,-3) and (3,3) and connect them by a straight line to get the graph of .
The signs of both inequalities are ">". So, the boundary line is a dotted line and the shaded region or each inequality lie above the boundary line.
Therefore, the graph of the given system of inequalities is shown below.
