9×0.05=0.045

0.045 of the 9 people will have side affects

theres is a 95.5% chance that no one will have sideaffects

4.5% chance that some one will.

Think thats right

5/100=5% ok

5 X(probibility)

_ = ___________

100 9(# 0f patients)

100x = 45 (multipled 1st fraction denominator w/ 2nd fraction’s numerator. then did the same thing, only flip numerator’s and denominators)

divide by 100 to get X by its self

0.45 patients which is not 1, but not 0 either!

P(no side effect) = .95

n = 9

a. P(no side effect) = .95^9 = .6302

b. P(at least one side affect) — forgot how to do this one