Estimate the Indicated Probability by Using the Normal Distribution as an Approximation

Multiple Choice

Estimate the indicated probability by using the normal distribution as an approximation to the binomial distribution.
-In one county, the conviction rate for speeding is 85%. Estimate the probability that of the next 100 speeding summonses issued, there will be at least 90 convictions.

A) 0.3962
B) 0.1038
C) 0.8962
D) 0.0420