23. A certain virus has infected 5% of the population. There is a test to determine if someone is infected with the virus, but it gives the incorrect result 10% of the time. If 1000 random people are tested for the virus, how many do you expect to test positive? (Hint, first find the probability.) Worth 6 points
23. A certain virus has infected 5% of the population. There is a test to determine if someone is infected with the virus, but it gives the incorrect result 10% of the time. If 1000 random people are tested for the virus, how many do you expect to test positive? (Hint, first find the probability.) Worth 6 points
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:23. A certain virus has infected 5% of the population. There is a test to determine if someone is infected
with the virus, but it gives the incorrect result 10% of the time. If 1000 random people are tested for
the virus, how many do you expect to test positive? (Hint, first find the probability.)
Worth 6 points
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