a. In a pack of six, what's the probability that all bulbs work? b. In a pack of six, what's the probability that 4 or less work? c. In a pack of 8, what's the probability that more than 5 work?
a. In a pack of six, what's the probability that all bulbs work? b. In a pack of six, what's the probability that 4 or less work? c. In a pack of 8, what's the probability that more than 5 work?
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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Transcribed Image Text:1. The probability that a manufactured bulb works properly is 98%.
a. In a pack of six, what's the probability that all bulbs work?
b. In a pack of six, what's the probability that 4 or less work?
c. In a pack of 8, what's the probability that more than 5 work?
d. In a pack of 10, what's the probability that exactly half work?
In a pack of 4, what's the probability that all are broken?
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