7. Find the probability that a person flipping a coin gets a. the third head on the seventh flip b. the first head on the fourth flip.
7. Find the probability that a person flipping a coin gets a. the third head on the seventh flip b. the first head on the fourth flip.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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6. It is estimated that 4000 of the 10,000 voting residents of a town are against a new sales tax. If 15 eligible voters
are selected at random and asked their opinion, what is the probability that at most 7 favor the new tax?
7. Find the probability that a person flipping a coin gets
a.
the third head on the seventh flip
b. the first head on the fourth flip.
8. On average a certain intersection results in 3 traffic accidents per month. What is the probability that for any
given month at this intersection
а.
exactly 5 accidents will occur?
b. less than 3 accidents will occur?
с.
at least 2 accidents will occur?
9. If new cases of West Nile in New England are occurring at a rate of about 2 per month, then what's the
probability that exactly 4 cases will occur in the next 3 months?
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