In a certain town, 60% of adults have a college degree. The accompanying table describes the probability distribution for the number of adults (among 4 randomly selected adults) who have a college degree. x p(x). Find the mean of the given probability distribution. 0 0.0256 1 0.1536 2 0.3456 3 0.3456 4 0.1296
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Step 1
The mean (also called the expected value) of a discrete probability distribution is found by multiplying each value of the random variable (x) by its corresponding probability (p(x)), and then summing the results. Mean = Σ[x * p(x)] In this case, we have: Mean Show more…
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