Question 3 A mail-order computer business has five telephone lines. Let X denote the number of lines in use at a specified time. Suppose the pmf of X is as given in the accompanying table. Compute the probability of at least 4 lines are in use. The pmf of X X P(x) .10 O 0.92 0 0 0 0 0 0 O 0.3 O something else O 0.55 O 0.7 0 O.08 .15 1 20 2 25 3 22 A .08 5

Question 3 A mail-order computer business has five telephone lines. Let X denote the number of lines in use at a specified time. Suppose the pmf of X is as given in the accompanying table. Compute the probability of at least 4 lines are in use. The pmf of X X P(x) .10 O 0.92 0 0 0 0 0 0 O 0.3 O something else O 0.55 O 0.7 0 O.08 .15 1 20 2 25 3 22 A .08 5

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter8: Sequences, Series,and Probability

Section8.7: Probability

Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....

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