Math
posted by Jessie .
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

prob of side effect = .07
prob of no side effect = .93
prob(no side effect, no side effect) = (.93)^2 = .8649 
How did you find the probability of no side effect ?

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
Respond to this Question
Similar Questions

statistics
A new treatment for AIDS is to be tested in a small clinical trial on 15 patients.The proportion p^ who respond to the treatment will be used as an estimate of the proportion p of (potential)responders in the entire population of AIDS … 
math
In a clinical trial, a drug used to relieve pain caused side effects in 9% of the patients who took it. For a new trial, three patients were selected at random. Find the probability that none of those patients had side effects. 
math
In a clinical trial, a drug used to reduce blood pressure caused side effects in 6% of the patients who took it. For a new rial, two patients were selected at random. Find the probability that both the patients had side effects. 
math
In a clinical trial, a drug used to reduce blood pressure caused side effects in 6% of the patients who took it. For a new rial, two patients were selected at random. Find the probability that both the patients had side effects. 
Math Homework
In a clinical trial, a drug used to relieve pain caused side effects in 2% of the patients who took it. For a new trial, three patients were selected at random. Find the probability that all three of the patients had side effects 
Simple Math
Please help me with this problem . It is not hard but I need some help . In a clinical trial, a drug used to relieve pain caused side effects in 9% of the patients who took it. For a new trial, two patients were selected at random. … 
Algebra227
A drug trial is testing the effectiveness of two drugs. If 40 patients are given Drug A, 80 patients are given Drug B, and 50 patients are given a placebo, what is the probability that a patient will not be given a placebo? 
Statictics
In testing a new drug, researchers found that 20% of all patients using it would have a mild side effect. A random sample of 25 patients using the drug is selected. Find the mean and standard deviation of patients having a mild side … 
statistics
4.2. A new drug that treats patients with anxiety has a 60% success rate in improving the patientâ€™s condition. For a random sample of eight patients taking this drug, determine the probability that: 4.2.1. Four patients have improvement … 
Business statistics
A new drug that treats patients with anxiety has a 60% success rate in improving the patientâ€™s condition. For a random sample of eight patients taking this drug, determine the probability that: 4.2.1. four patients have improvement …