SOLUTION: Suppose that after 10 years of service, 30% of computers have problems with motherboards (MB), 20% have problems with hard drives (HD), and 15% have problems with both MB and HD. W

Question 1164589: Suppose that after 10 years of service, 30% of computers have problems with motherboards (MB), 20% have problems with hard drives (HD), and 15% have problems with both MB and HD. What is the probability that a 10-year old computer still has fully functioning MB and HD? (10)
Answer by ikleyn(52890) (Show Source): You can put this solution on YOUR website!
.


    P(MB or HD) = P(MB) + P(HD) - P(both) = 0.3 + 0.2 - 0.15 = 0.35.


    P(a 10-years old computer is OK) = 1 - 0.35 = 0.65 = 65%.    ANSWER

Solved.

RELATED QUESTIONS
Suppose that after 10 years of service, 40% of computers have problems with motherboards... (answered by jrfrunner)

The computer processor was technically inspected after 10 years of operation. The... (answered by ikleyn,Alan3354)

Two out of six computers in a lab have problems with hard drives. If three computers are... (answered by Theo)

Data files on computers have sizes measured in megabytes. When files are sent from one... (answered by robertb)

Suppose atoms of a given kind have an exponential distributed lifetime with mean 30... (answered by Fombitz)

Hi, Can you please help? . Can you please give me some math problems for my homework?... (answered by jim_thompson5910)

You wish to estimate, with 98% confidence, the proportion of computers that need repairs... (answered by stanbon)

We're studying Logarithms in school and I understand it but have problems with word... (answered by scott8148)

Each song on a personal music player requires approximately 4 megabytes(MB)(4x10^6 bytes) (answered by stanbon)