About 85% of Americans suffered acne sometime between the age of 12-25. You randomly select 8 adults over the age of 25.

About 85% of Americans suffered acne sometime between the age of 12-25. You randomly select 8 adults over the age of 25...

1) find the probability that exactly 5 suffered from acne

2) find the probability that under 3 suffered from acne

3) find the probability that more than 7 suffered from acne.