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05.11.2020 •
Mathematics
The random variable W can take on the values of 0, 1, 2, 3, or 4. The expected value of W is 2.8. Which of the following is the best interpretation of the expected value of random variable W ?
A A randomly selected value of W must be equal to 2.8.
B The values of W vary by about 2.8 units from the mean of the distribution.
C The mean of a random sample of values selected from the distribution will be 2.8.
D A value of W randomly selected from the distribution will be less than 2.8 units of the mean.
E For values of W repeatedly selected at random from the distribution, the mean of the selected values will approach 2.8.
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Ответ:
D
Step-by-step explanation:
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