In a certain town, 30% 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. Find the mean. Round your answer to two decimal places. x P(x) 0 0.2401 1 0.4116 2 0.2646 3 0.0756 4 0.0081
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Since there are 4 adults, the possible numbers of adults with a college degree are 0, 1, 2, 3, and 4. So, we multiply each probability by its corresponding number: 0*0.2401 = 0 1*0.4116 = 0.4116 2*0.2646 = 0.5292 Show more…
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