CAN SOMEONE HELP ME WITH #1????
1 answer:
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Answer:
Step-by-step explanation:
We are solving for the segment of AB. Note that it is a line segment, so there will be end points, those being A(-4, 5) & B(2, -5).
Use the following distance formula:
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Let:
Point B(2 , -5) = (x₁ , y₁)
Point A(-4 , 5) = (x₂ , y₂)
Plug in the corresponding numbers to the corresponding variables.
Simplify. Remember to follow PEMDAS. First, solve the parenthesis, then the powers, then add, and then finally square root.
Simplify:
is your answer.
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That depends. If you have a finite data set, you would add up all the points you have and divide by the total count.
Or, if you are working with pure distributions, the mean is the same as the expected value of the corresponding random variable.
Suppose you have a discrete random variable
with a given probability mass function 
, then the mean is given by
which would mean you take all the possible probability for the event that
, multiply each by that 
, and add them together.
If the distribution is continuous, say a random variable
that has probability distribution function 
over some support 
, then the mean is
Or, if you are working with pure distributions, the mean is the same as the expected value of the corresponding random variable.
Suppose you have a discrete random variable
which would mean you take all the possible probability for the event that
If the distribution is continuous, say a random variable
