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13 January, 02:10

Suppose that 10% of adults belong to health clubs, and 40% of these health club members go to the club at least twice a week. What percent of all adults go to a health club at least twice a week? Write the information given in terms of probabilities and use the general multiplication rule.

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  1. 13 January, 02:33
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    4% of all adults go to a health club at least twice a week

    Step-by-step explanation:

    the proportion of adults who belong to health clubs is 10% that is 0.10 the proportion of these adults (health club members) go to the club at least twice a week is 40%, that is 0.40.

    Thus, the proportion of all adults go to a health club at least twice a week is

    0.10 * 0.40 = 0.04, that is 4%
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