Chuck and dana agree to meet in chicago for the weekend. chuck travels 60 miles in the same time that dana travels 52 miles.  if chuck's rate of travel is 4 mph than dana's, and they travel the same length of time, at what speed does chuck travel? a) 30mph b) 26mph c) 35 mph d) 25mph

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.)