t quit working either because they have virus A or computer virus B.  Jenn estimates that about 20% of customers come in because of virus A and the remaining come in because of virus B .  If the computer is infected by virus A, Jenn has a 35% chance of fixing the problem.  But if the computer has virus B, she has a 95% chance of fixing the problem. 1.  A random computer is selected from the shop. What is the probability that it can't be fixed by Jenn?  Show your work on paper  2.  A random computer is selected and it is one Jenn can't fix.  What is the probability that it was infected with virus A?  Show your work on paper

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 25PPS
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Jenn works for a company that helps customers with various computer problems and she is in charge of computers that quit working either because they have virus A or computer virus B.  Jenn estimates that about 20% of customers come in because of virus A and the remaining come in because of virus B .  If the computer is infected by virus A, Jenn has a 35% chance of fixing the problem.  But if the computer has virus B, she has a 95% chance of fixing the problem.

1.  A random computer is selected from the shop. What is the probability that it can't be fixed by Jenn?  Show your work on paper 

2.  A random computer is selected and it is one Jenn can't fix.  What is the probability that it was infected with virus A?  Show your work on paper 

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