The secretary in Exercise 2.121 was given n computer passwords and tries the passwords
Chapter 3, Problem 3.16(choose chapter or problem)
The secretary in Exercise 2.121 was given n computer passwords and tries the passwords at random. Exactly one password will permit access to a computer file. Find the mean and the variance of Y , the number of trials required to open the file, if unsuccessful passwords are eliminated (as in Exercise 2.121).
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