A large gym with hundreds of members offers yoga classes. Members are free to take these
classes at no charge, but not all members are interested, and some never take advantage of the
yoga classes. Non-members can also take these classes, but they must pay a fee for each class.
A manager at the gym is curious about overall satisfaction with these yoga classes, so they
survey a large random sample of anyone who has taken a yoga class at the gym in the past year.
They find that 78% of those surveyed are "very satisfied" with the yoga classes.
For which population is 78% a legitimate estimate of the percent of people that are "very
satisfied" with the yoga classes?
Choose 1 answer:
only those surveyed
All members who have taken a yoga class at the gym in the past year, but not non-
members
All non-members who have taken a yoga class at the gym in the past year, but not
members
anyone who has taken a yoga class at the gym in the past year but not before that
anyone who has ever taken a yoga class at the gym