An experiment is designed to test the potency of a drug on 20 rats. Previous experiments have shown that a 10-mg dose of the drug is lethal 5% of the time within the first 4 hours; of the animals alive at 4 hours, 10% will die in the next 4 hours. a) What is the probability that 0 rats will die in the 8-hour period. (Hint: use the fact that P(A∩B) = P(A|B)P(B)). b) What is the probability that exactly 1 rat will die in the 8-hour period. (Hint: the rat will die either during the first period or during the second.)
An experiment is designed to test the potency of a drug on 20 rats. Previous experiments have shown that a 10-mg dose of the drug is lethal 5% of the time within the first 4 hours; of the animals alive at 4 hours, 10% will die in the next 4 hours. a) What is the probability that 0 rats will die in the 8-hour period. (Hint: use the fact that P(A∩B) = P(A|B)P(B)). b) What is the probability that exactly 1 rat will die in the 8-hour period. (Hint: the rat will die either during the first period or during the second.)
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 32E
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An experiment is designed to test the potency of a drug on 20 rats. Previous experiments have shown that a 10-mg dose of the drug is lethal 5% of the time within the first 4 hours; of the animals alive at 4 hours, 10% will die in the next 4 hours. a) What is the
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