The Average Life Expectancy of Computers Produced by Ahmadi, Inc

question 28

Essay

The average life expectancy of computers produced by Ahmadi, Inc. is 6 years with a standard deviation of 10 months. Assume that the lives of computers are normally distributed. Suggestion: For this problem, convert ALL of the units to months.
a.What is the probability that a randomly selected computer will have a life expectancy of at least 7 years?
b.Computers that fail in less than 5years will be replaced free of charge. What percentage of computers are expected to be replaced free of charge?
c.What are the minimum and the maximum life expectancy of the middle 95% of the computers' lives? Give your answers in months and do not round your answers.
d.The company is expecting that only 104 of this year's production will fail in less than 3 years and 8 months. How many computers were produced this year?

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Definitions:

White Rats

Laboratory rats, often of the albino variety, used in research and experiments.

Classical Conditioning

In this learning approach, two stimuli are repeatedly linked, and a reaction that starts out being caused by the second stimulus is in time caused by just the first stimulus.

Discrimination

The unjust or prejudicial treatment of different categories of people, especially on the grounds of race, age, or gender.

Generalization

The process of applying the response to one stimulus to similar stimuli, often used in learning and behavior psychology.