Answer:
(a) 40 into 1120=28....28 into 1120=40 so 1120 is the denominator of 40&28
The expected value of the discrete distribution is of 20.97, hence option C gives the correct answer.
<h3>What is the mean of a discrete distribution?</h3>
The expected value of a discrete distribution is given by the <u>sum of each outcome multiplied by it's respective probability.</u>
Hence, according to the table, the expected value is given by:
E(X) = 12 x 0.08 + 18 x 0.15 + 20 x 0.31 + 22 x 0.08 + 24 x 0.15 + 25 x 0.23 = 20.97.
More can be learned about the expected value of a discrete distribution at brainly.com/question/26660401
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In order to find a square feet, you must evaluate the area of a specific shape. Then, you must apply the shape’s formula for area.
Examples:
Rectangle: lw or Length x Width
Circle: pi x r^2 or 3.14159... x radius squared
Triangle: 1/2 bh 1/2 base x height
