Question

freemont run club surveyed a random sample of 30 of their members about their running habits. of the members surveyed, 9 said that they run more than 5 days a week. there are 84 freemont run club members. based on the data, what is the most reasonable estimate for the number of the freemont run club members who run more than 5 days a week?

Answer 1

25 is the correct answer! I got this explanation image from Khan Academy, if the other answer doesn't make sense to you.

Answer 2

Hi there! The answer is A. 25.

If 9 out of 30 people say they run more than 5 days a week (and we assume that the rates are proportional), we can find the amount of runners the following way: multiply the proportion ( 9 : 30 ) by the total amount of runners ( 84 ).


`runners = 9 * 84 / 30 = 25.2`
Therefore about 25 runners run more than 5 days a week