The table gives the percent of U.S. residents who participated in no leisure-time physical activity, categorized by

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The table gives the percent of U.S. residents who participated in no leisure-time physical activity, categorized by race or origin.

(a) What is the probability that a Black person participated in no leisure-time physical activity?

(b) What is the probability that a White person participated in no leisure-time physical activity?

(c) Can we add the probabilities in the row to find the probability that a U.S. resident participated in no leisure-time physical activity? Why?

White Black Hispanic Other No leisure-time physical activity 21.4 32.8 38.6 25.5
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