In: Statistics and Probability
Customers experiencing technical difficulty with their Internet
cable hookup may call an 800 number for technical...
Customers experiencing technical difficulty with their Internet
cable hookup may call an 800 number for technical support. It takes
the technician between 30 seconds and 10 minutes to resolve the
problem. The distribution of this support time follows the uniform
distribution.
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a. |
What are the values for a and b in minutes?
(Do not round your intermediate calculations. Round your
answers to 1 decimal place.)
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b-1. |
What is the mean time to resolve the problem? (Do not
round your intermediate calculations. Round your answer to 2
decimal places.)
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b-2. |
What is the standard deviation of the time? (Do not
round your intermediate calculations. Round your answer to 2
decimal places.)
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c. |
What percent of the problems take more than 5 minutes to
resolve? (Do not round your intermediate calculations.
Round your answer to 2 decimal places.)
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d. |
Suppose we wish to find the middle 50% of the problem-solving
times. What are the end points of these two times? (Do not
round your intermediate calculations. Round your answers to 3
decimal places.)
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