A biometric security device using fingerprints erroneously refuses to admit 3 in 2,000 authorized persons from a facilitycontaining classified information. The device will erroneously admit 3 in 1,017,000 unauthorized persons. Assume that98 percent of those who seek access are authorized. If the alarm goes off and a person is refused admission, what is theprobability that the person was really authorized? (Round your answer to 5 decimal places.) Probability:

Let A be the event that the person who seeks access is authorized.R be the event that person is…

Answered: containing classified information. The…

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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Hospitals typically require backup generators to provide electricity in the event of a power outage. Assume that emergency backup generators fail 42% of the times when they are needed. A hospital has two backup generators so that power is available if one of them fails during a power outage. Complete parts (a) and (b) below. a. Find the probability that both generators fail during a power outage. (Round to four decimal places as needed.) b. Find the probability of having a working generator in the event of a power outage. Is that probability high enough for the hospital? Assume the hospital needs both generators to fail less than 1% of the time when needed. (Round to four decimal places as needed.) Is that probability high enough for the hospital? Select the correct answer below and, if necessary, fill in the answer box to complete your choice. O A. No, because both generators fail about % of the time they are needed. Given the importance of the hospital's needs, the reliability should…
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