The Average Life Expectancy of Computers Produced by Ahmadi, Inc

question 62

Short Answer

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 5 1/2 years 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:

Muscle Fiber

A single muscle cell, known for its ability to contract, enabling movement and force generation in the body.

Labeled Structure

A diagram or model that has markers or tags indicating the names or positions of various components.

Epimysium

The fibrous outer layer of connective tissue that surrounds an entire skeletal muscle.

Perimysium

The connective tissue sheath that groups muscle fibers into bundles or fascicles, providing structural support and facilitating blood flow.