4. According to the Department of Health and Human Services, 30% of 18- to 25-year-olds have some form of mental illness. a. What is the probability six randomly selected 18- to 25-year-olds have some form of mental illness? b. What is the probability at least one of six randomly selected 18- to 25-year-olds has some form of mental illness?
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The probability of one randomly selected 18- to 25-year-old having some form of mental illness is 30%, or 0.3. Show more…
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According to the Department of Health and Human Services, $30 \%$ of 18 - to 25-year-olds have some form of mental illness. (a) What is the probability two randomly selected 18 - to 25 -yearolds have some form of mental illness? (b) What is the probability six randomly selected 18 - to 25 -yearolds have some form of mental illness? (c) What is the probability at least one of six randomly selected 18- to 25-year-olds has some form of mental illness? (d) Would it be unusual that among four randomly selected 18 -to 25 -year-olds, none has some form of mental illness?
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