Probability question

[KellyE]

Can someone show me how to solve this problem please?
studies show that one in four adults gets enough exercise. in a random sample of 8 adults, what is the probability the exactly 3 people get enough exercise?

 

[Steven G]

No, no one here will show you how to solve your problem--sorry.

We prefer that you solve your own problem with assistance from helpers from this forum.

Here are some questions which you should answer before being able to do your problem.
What is the probability that some one exercises enough?
What is the probability that someone does not exercise enough?
If in 8 people exactly 3 get enough exercise then how many do not get enough exercise?
Do you think that this a binomial problem?

Please post back.