Of the nine members of the board of trustees of a college, five agree with the president on a certain issue. The president selects three trustees at random and asks for their opinions. What is the probability (expression only) that at least two of them will agree with him?
Of the nine members of the board of trustees of a college, five agree with the president on a certain issue. The president selects three trustees at random and asks for their opinions. What is the probability (expression only) that at least two of them will agree with him?
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 9ECP: A random number generator selects two integers from 1 to 30. What is the probability that both...
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Transcribed Image Text:Of the nine members of the board of trustees of a college, five agree with the president
on a certain issue. The president selects three trustees at random and asks for their
opinions. What is the probability (expression only) that at least two of them will agree
with him?
A die is rolled four times. What is the probability of obtaining only even numbers
given that the first roll was larger than 3?
Let E and F be events with Pr(E) = .4, Pr(F) = .3, and Pr(E UF) = .5. Find
Pr(E\F).
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