Exercise Three 1) According to the reliability rating, how many units on average would you expect to fail in one week?

Exercise Three 1) According to the reliability rating, how many units on average would you expect to fail in one week? Reliability of 168 hours = e^((Ln .97 = e^(-failure rate*17520))*168)=.999708; thus, probability of failure is 1-.99708 = .000292032 or (.000292032 Probability of failure) X (1000 units/week production) = .292032 units failing each week 2) From the 30 weeks of data supplied, on average, what is the proportion failing?