In testing a new drug, researchers found that 3% of all patients using it will have a mild side effect. A random sample of 14 patients using the drug is selected. Find the probability that:
a. none will have this mild side effect.
b. at least one will have this mild side effect.
Select your answer below. Possible answers appear in the form [ answer to a., answer to b.].
2006-10-01 16:02:55 · 2 answers · asked by RunsLikeElijah 3 in Science & Mathematics ➔ Mathematics
You have to use the binomial distribution. See here for explanations and formulas a bit difficult to type out here:
http://en.wikipedia.org/wiki/Binomial_distribution
a) Use a binomial distribution with p =0,03, n=14 k=0.
Answer: (1-0.03) ^ 14 = 65.3%
b) Use a binomial distribution with p =0,03, n=14 k=1.
Answer: 14 0.03 (1-0.03) ^ 13 = 28.3%
2006-10-02 01:48:45 · answer #1 · answered by cordefr 7 · 0⤊ 0⤋
[1,0]
2006-10-02 01:27:29 · answer #2 · answered by a_ebnlhaitham 6 · 0⤊ 1⤋