Math Geometry A CR
English
Na
3
Finding Slopes of Perpendicular Lines
o
Given: PO IPO
Prove (mm) (murah) = -1
Pl(-b, a)
P(a, b)
Q'(-d, c)
Q (c, d)
Check
Intro

The life (in hours) of a magnetic resonance imagining machine (mri) is modeled by a weibull distribution with parameters β = 2 and δ = 370 hours. (a) determine the mean life of the mri. (round your answer to 2 decimal ) determine the variance of the life of the mri. (round your answer to 1 decimal ) what is the probability that the mri fails before 250 hours? (round your answer to 4 decimal places.)