The plot of the PDF shows the distribution is symmetric. This means that the mean is the same as the median, and that the 50% of the distribution lies to other side of this mean, i.e.
For this distribution, .
Dr. Washington is interested in studying the relationship between test scores, coded from zero percent to 100 percent, and the n
1 answer:
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Answer: Third option
Step-by-step explanation:
One of the ways of solving a system of equations is by equating the equations and solving for one of the variables.
In this case we have the system:
Note that if is equal
and also
equals
Then logically must be equal to
.
We write equality.
Then the correct answer is the third option.
We can also solve for the variable x