Answer Happy

4. a. The circuit below contains independent components with the probability of failure given in each box. Find the probability the circuit operates by time 1000 assuming the information given below. Component A B с Distribution Exponential Weibull Weibull Parameters 2=0.00009 B = 2.2, S = 20,000 B = 2.0, S =15,000 A A с .B .B A A A A b. The number of telephone calls that arrive to a health clinic is Poisson distributed with mean rate of 36 calls per hour. Find the probability that the time between calls exceeds 2 minutes. C. A consumer needs parts with specification 36 +/- 2; i.e., parts shorter than 34 and longer than 38 are not acceptable. The producer makes parts with dimension normally distributed with mean 35 and standard deviation 1.5. Find the fraction of parts that are acceptable.