Question

1. On which road would there be a larger standard deviation in speed: a backroad or an interstate? Justify your answer

Answer 1

Your answers may vary slightly. 5.2 Normal Distributions: Finding Probabilities If you are given that a random variable Xhas a normal distribution, nding probabilities corresponds to nding the area between the standard normal curve and the x-axis, using the table of z-scores. The mean (expected value) and standard deviation ˙should be given

Explanation: