As of March 2018, 52 companies have been approved by the California Department of Motor Vehicles to test autonomous vehicles on the road. In May 2018 a panel of economics experts (University of Chicago, IGM Forum) was asked their opinion about autonomous cars. Only 14% of economists agreed that autonomous cars will raise average welfare in the United States by at least as much as smart phones. A random sample of 135 economists was selected.

a. What is the probability that 16 or more economists agreed that autonomous cars will raise average welfare in the United States by at least as much as smart phones?

b. What is the probability that 24 or more economists agreed that autonomous cars will raise average welfare in the United States by at least as much as smart phones?

c. What is the probability that between 14 and 25 economists agreed that autonomous cars will raise average welfare in the United States by at least as much as smart phones?