## Related questions with answers

*Lactose intolerance* Lactose intolerance affects about $20 \%$ of non-Hispanic White Americans; $50 \%$ of Hispanic Americans; and $75 \%$ of African, Asian, and Native Americans (*Source*: Jean Carper, "Eat Smart," *USA Weekend*). Seventy-six percent of U.S. residents are non-Hispanic Whites; $9 \%$ of them are Hispanic; and $15 \%$ are African, Asian, or Native American. If a person is selected from this group of people, what is the probability that the person will have lactose intolerance?

Solution

VerifiedProvide the probability that a person chosen at random from a group of people will have lactose intolerance if the group contains $20 \%$ of non-Hispanic White Americans, $50 \%$ of Hispanic Americans and $75 \%$ of African, Asian and Native Americans who have lactose intolerance. Notice that $76 \%$ of U.S. citizens are non-Hispanic Whites, $9 \%$ of them are Hispanic and $15 \%$ are African, Asian or Native American.

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