The most desirable method of evaluating a supplier is: Question 119Select one: a. a questionnaire. b. a history evaluation. c. a survey evaluation. d. a discussion with the quality manager on the phone.A component failed 5 times during a 360-hour test and the failures follow an exponential distribution. In this situation, what is the estimated MTBF in hours? Question 120Select one: a. 1,800.000 b. 500.000 c. 0.014 d. 72.000