Suppose that the current measurements in a strip of wire are assumed to follow a normal distribution with a mean of 20 milliamperes and a standard deviation of 4 milliamperes. What is the probability...

Suppose that the current measurements in a strip of wire are assumed to follow a normal distribution with a mean of 20 milliamperes and a standard deviation of 4 milliamperes. What is the probability that a measurement exceeds 15 milliamperes? What is the probability that a current measurement is between 8 and 12 milliamperes