Kizspy | Question: 37
(Choose 1 answer)
At a particular location along a highway, a state official from the Department of Transportation in an unmarked car records the speed for each of a random sample of 36 cars. The resulting sample mean speed was 68.3 miles per hour (mph),and the standard deviation was 8.3 mph. Construct a 95% confidence interval estimate for the population mean speed.
Α. (65.49; 71.11)
Β. (65.96; 70.64)C. (65.59; 71.01)
D. (66.02; 70.58)
E. None of the other choices is correct
Let 20.05 1.645; 20.025 1.960; to.05; 35 1.690; to.025;35 2.030
