Homework Help: Math

Posted by Jessie on Thursday, January 31, 2013 at 9:21pm.

In a clinical trial, a drug used to relieve pain caused side effects in 7% of the patients who took it. For a
new trial, two patients were selected at random. Find the probability that neither of the patients had side
effects

Math - Reiny, Thursday, January 31, 2013 at 9:36pm
prob of side effect = .07
prob of no side effect = .93

prob(no side effect, no side effect) = (.93)^2 = .8649
Math - Jessie, Thursday, January 31, 2013 at 10:00pm
How did you find the probability of no side effect ?
Math - Reiny, Thursday, January 31, 2013 at 10:15pm
Either you have side effects or you don't have side effects
prob is a number between 0 and 1
so if prob(side effects) = .07
prob (no side effects) = 1 - .07 = .93

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