Wires manufactured for use in a certain computer system are specified to have resistances between 0.12 and 0.14 ohm. The actual mea sured resistances of the wires produced by Company A have a normal probability distribution with a mean of 0.13 ohm and a standard deviation of 0.005 ohm.

a What is the probability that a randomly selected wire from Company A’s production will meet the specifications?

b If four such wires are used in the system and all are selected from Company A, what is the probability that all four will meet the specifications?