Select the correct answer

The weights of aluminium castings produced by a process are normally distributed with / = 2 kg and o = 0.10 kg. Design specifications require the castings to weigh between 1.836 and 2.164 kg, inclusively. Any casting weighing more than 2.164 kg is re-worked. The probability that a casting produced by this process will be re-worked, due to over-weight, is Select one: O a. 10.0010 O b. 0.0505 c. 0.0101 Od. 0. 1010Let Z be a normal random variable with mean 0 and standard deviation 1. The 95th percentile of Z is Select one: O a. 1.960 b. -1.254 c. 1.280 O d. 1.645