4.21 The probability of an electronic sensor malfunctioning is known to be 0.10. A random sample of 12 sensors is chosen. Find the probability that: a. at least 3 will malfunction. b. no more than 5 will malfunction. c. at least 1 but no more than 5 will malfunction.
4.21 The probability of an electronic sensor malfunctioning is known to be 0.10. A random sample of 12 sensors is chosen. Find the probability that: a. at least 3 will malfunction. b. no more than 5 will malfunction. c. at least 1 but no more than 5 will malfunction.
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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answer letters a, b, and c only. thank you
Transcribed Image Text:4.21 The probability of an electronic sensor malfunctioning is known to be 0.10. A
random sample of 12 sensors is chosen. Find the probability that:
a. at least 3 will malfunction.
b. no more than 5 will malfunction.
c. at least 1 but no more than 5 will malfunction.
d. What is the expected number of sensors that will malfunction?
e. What is the standard deviation of the number of sensors that will malfunction?
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