(a) In testing a certain kind of truck tire over a rugged terrain, it is found out that 25% of the trucks fail to complete the test without a blowout. Suppose that 15 trucks are tested. (a.1) What is the probability that exactly 5 trucks have blowouts? (a.2) What is the probability that fewer than 5 trucks have blowout? (a.3) Determine the average number of blowouts that may be encountered during the said test.

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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Situation 5.a.L

(a) In testing a certain kind of truck tire over a
rugged terrain, it is found out that 25% of the
trucks fail to complete the test without a
blowout. Suppose that 15 trucks are tested.
(a.1) What is the probability that exactly
5 trucks have blowouts?
(a.2) What is the probability that fewer
than 5 trucks have blowout?
(a.3) Determine the average number of
blowouts that may be encountered
during the said test.
Transcribed Image Text:(a) In testing a certain kind of truck tire over a rugged terrain, it is found out that 25% of the trucks fail to complete the test without a blowout. Suppose that 15 trucks are tested. (a.1) What is the probability that exactly 5 trucks have blowouts? (a.2) What is the probability that fewer than 5 trucks have blowout? (a.3) Determine the average number of blowouts that may be encountered during the said test.
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