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Stat 4714 Inclass Exercise on Probability Distributions
Identify which probability distribution would be used to answer each question, along with the
parameter and values for that parameter that would be used in the problem. Ex: negative binomial
with p=.02 and r = 3
(1) How many times would you expect to toss a balanced coin in order to obtain the first head?
Geometric p=.5
OR
Negative binomial with r = 1 and p=.5
(2) A new surgical procedure is successful with a probability of .8. Assume the operation is
performed 5 times and the results are independent of one another. What is the probability
that all five operations are successful?
Binomial n = 5 p=.8
(3) A jury of six persons was selected from a group of twenty potential jurors, of whom eight
had a college degree and twelve who only had a high school diploma. What is the probability
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This note was uploaded on 01/17/2011 for the course STAT 4714 at Virginia Tech.
 '07
 MQLemons
 Binomial, Probability

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