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4.9.3
The life (in hours) of a magnetic resonance imagining machine (MRI) is
modeled by a Weibull distribution with parameters 8 = 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.)
(@)
(b)
(c)
Statistical Tables and Charts
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