The life (in hours) of a magnetic resonance imagining machine (MRI) is modeled by a Weibull distribution with parameters ß = 2 and 6 = 430 hours. (a) Determine the mean life of the MRI. (Round your answer to 2 decimal places.) (b) Determine the variance of the life of the MRI. (Round your answer to 1 decimal place.) (c) What is the probability that the MRI fails before 250 hours? (Round your answer to 4 decimal places.) (a) i ! (b) і (c) i

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The life (in hours) of a magnetic resonance imagining machine (MRI) is modeled by a Weibull distribution with parameters ß = 2 and 6
= 430 hours.
(a) Determine the mean life of the MRI. (Round your answer to 2 decimal places.)
(b) Determine the variance of the life of the MRI. (Round your answer to 1 decimal place.)
(c) What is the probability that the MRI fails before 250 hours? (Round your answer to 4 decimal places.)
(a) i
!
(b) і
(c) i
Transcribed Image Text:The life (in hours) of a magnetic resonance imagining machine (MRI) is modeled by a Weibull distribution with parameters ß = 2 and 6 = 430 hours. (a) Determine the mean life of the MRI. (Round your answer to 2 decimal places.) (b) Determine the variance of the life of the MRI. (Round your answer to 1 decimal place.) (c) What is the probability that the MRI fails before 250 hours? (Round your answer to 4 decimal places.) (a) i ! (b) і (c) i
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