Review the Venn diagram. Which set of conditions is true? A. B 3 2. 1 7 8 5 9 10 4 6 O An B = 1, 3, 9, 10 A = 1, 3, 4, 8, 9, 10 B = 2, 5, 6, 7 AB=4,8 Au B = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 B = 2, 5, 6, 7 AnB=4, 8 A = 1, 3, 4, 8, 9, 10 B = 2, 4, 5, 6, 7, 8 O AU B = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 AnB = 1, 3, 4, 8, 9, 10 BnA = 2, 4, 5, 6, 7, 8​

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.)