Question

in a random sample of 25 gym members,8 prefer to drink bottled water rather than drink tap water during a workout.There is a total of 312 gym members.Based om tye results of the sample which is the best estimate of the number of gyme members who prefer to drink bottled water? A:40. B:60. C:80. D:100 E:120

Answer 1

We solve this poblem by rule of 3:

25 gym members----------------8 prefer to drink bottled water
312 gym members--------------    x
x=(312 gym members * 8 prefer to drink bottled water) / 25 gym members=
=99,84 prefer to drink bottled water≈100 prefer to drink bottled water.

the answer is :
D: 100