Answer: Rectangle
Step-by-step explanation:
Using it's formula, it is found that the mean of the discrete random variable is given by:
B. 30.47.
<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, considering the table, the mean of the discrete distribution is:
E(X) = 23 x 0.16 + 25 x 0.09 + 26 x 0.18 + 31 x 0.12 + 34 x 0.24 + 38 x 0.21 = 30.47.
Hence option B is correct.
More can be learned about the mean of a discrete random variable at brainly.com/question/26660401
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Answer:
C = 34
Step-by-step explanation:
XW/XV = YW/YZ [[write it out]]
12 / (12+5) = 24 / x [[x is unknown]]
12 / 17 = 24 / x [[solve for x]]
17(24) = 12x [[cross-multiply]]
408 = 12x [[divide for x]]
x = 34 [[answer]]
