Question
GDOT wants to research whether or not to change the speed limit on 285. In a sample of 40 cars, the average speed was 72.4
GDOT wants to research whether or not to change the speed limit on 285. In a sample of 40 cars, the average speed was 72.4 mph with a standard deviation of 4.8 mph. Build a 90% confidence interval for the mean speed of cars on 285. What is the point estimate?
Question 5 options:
285
72.4
40
90
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Calculus Early Transcendentals
Authors: William L. Briggs, Lyle Cochran, Bernard Gillett
2nd edition
321954428, 321954424, 978-0321947345
