The weights of cars passing over a bridge have a mean of 3,550 pounds and standard deviation of 870 pounds. Assume that the weights of the cars passing over
the bridge are normally distributed. Use a calculator to find the probability that the
weight of a randomly-selected car passing over the bridge is more than 4,000
pounds.
a) 30.42%
b) 50%
C) 69.58%
d) 39.34%