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Suppose we are interested in the mean speed of vehicles on interstate highways in the U.S. We checked the speed of 40 cars near exit
Suppose we are interested in the mean speed of vehicles on interstate highways in the U.S. We checked the speed of 40 cars near exit 115 on the I-45 and the result is as below (in mph): 80, 75, 65, 70, 73, 72, 79, 73, 75, 77, 80, 75, 65, 70, 73, 72, 79, 73, 75, 77, 80, 75, 65, 70, 73, 72, 79, 73, 75, 77, 80, 75, 65, 70, 73, 72, 79, 73, 75, 77. Now, we are interested in the proportion of cars that are over 75 mph of speed on interstate highways in the U.S. What is the point estimate of this proportion
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