# Question

Obtaining a driver’s license at the earliest eligible age has been a teenage ritual that appears to be fading. A study performed by the University of Michigan Transportation Research Institute recently found that 30% U. S. teenagers between the ages of 17 to 19 did not possess a driver’s license. A random sample of 140 17 to 19 year old teenagers was selected.

a. What is the probability that 45 or fewer teenagers of this sample had not obtained a driver’s license?

b. What is the probability that 50 or more teenagers of this sample had not obtained a driver’s license?

c. What is the probability that between 35 and 40 teenagers had not obtained a driver’s license?

d. Suppose that 28 teenagers from this sample had not obtained a driver’s license? Does this result support the findings reported by the University of Michigan Transportation Research Institute?

a. What is the probability that 45 or fewer teenagers of this sample had not obtained a driver’s license?

b. What is the probability that 50 or more teenagers of this sample had not obtained a driver’s license?

c. What is the probability that between 35 and 40 teenagers had not obtained a driver’s license?

d. Suppose that 28 teenagers from this sample had not obtained a driver’s license? Does this result support the findings reported by the University of Michigan Transportation Research Institute?

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