SOLUTION: A new drug that treats patients with anxiety has a 60% success rate in improving the patient�s condition. For a random sample of eight patients taking this drug, determine the pro

Question 902130: A new drug that treats patients with anxiety has a 60% success rate in improving the patient�s condition.
For a random sample of eight patients taking this drug, determine the probability that:
4.2.1. four patients have improvement in their condition.
4.2.2. at least two patients have improvement in their condition.
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
p(imp) = .60, n = 8
P(x=4)= binompdf(8, .6, 4)
P(x ≥ 2) = 1 - P(x ≤ 1) = 1 = binomcdf(8, .6, 1)
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