Internet sites often vanish or move, so that references to them can't be followed. In fact, 13% of Internet sites referenced in major scientific journals are lost within two years after publication. If a paper contains seven Internet references, what is the probability that at least one of them doesn't work two years later?

Internet sites often vanish or move, so that references to them can't be followed. In fact, 13% of Internet sites referenced in major scientific journals are lost within two years after publication. If a paper contains seven Internet references, what is the probability that at least one of them doesn't work two years later?

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...

See similar textbooks

Similar questions

In a new fiber-optic communication system, transmission errors occur at the rate of 2.5 per ten seconds. What is the probability that more than five errors will occur during the next minute?
Bryan is performing data entry for an insurance company by taking handwritten records and entering them into the database. Thus far, 15.6% of the handwritten records have had missing data that prevented them from being entered into the database. If Bryan takes 10 handwritten records, what is the probability that at most three records will be incomplete?
Find the probability that a driver with at least one collision in the past year is a middle aged adult driver.
There is a 60% chance of getting stuck in traffic when leaving the city. On two separate days, what is the probability that you get stuck in traffic both days?
It is estimated that 75% of adults use Twitter. If a sample of 6 adults is selected at random to answer a survey on Twitter, find the probability that: a. 50% of them use Twitter; b. All of them use Twitter; c. More than half of them use Twitter.
A certain typing agency employs two typists. The average number of errors per article is 1.4 when typed by the first typist and 2.4 when typed by the second. If your article is equally likely to be typed by either typist, find the probability that it will have no errors.
Empirical evidence suggests that 25% of Florida drivers are uninsured. If four random Florida drivers are involved in an accident, what is the probability that more than one of them are uninsured?
A certain typing agency employs two typists. The average number of errors per article is 1.21.2 when typed by the first typist and 55 when typed by the second. If your article is equally likely to be typed by either typist, find the probability that it will have no errors.
It is estimated that 3.6% of the general population will live past their 90th birthday. In a graduating class of 738 high school seniors, find the probability that 30 or more will live beyond their 90th birthday.
According to a recent study, 1 in every 7 women has been a victim of domestic abuse at some point in her life. Suppose we have randomly and independently sampled twenty-five women and asked each whether she has been a victim of domestic abuse at some point in her life. Find the probability that more than 22 of the women sampled have not been the victim of domestic abuse.