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Question 7 2 out of 2 points A study on highway safety studied the driving habits of individuals. A sample of 78 cars travelling on the highway revealed an average speed of 94 kph with a standard deviation of 29.9 kph. Determine the 95% confidence interval for the mean speed of all cars (kph), if it is known that speed is normally distributed. Give the upper limit only (in kph) correct to three decimal places. Selected Answer: 100.741
Question 7 2 out of 2 points A study on highway safety studied the driving habits of individuals. A sample of 78 cars travelling on the highway revealed an average speed of 94 kph with a standard deviation of 29.9 kph. Determine the 95% confidence interval for the mean speed of all cars (kph), if it is known that speed is normally distributed. Give the upper limit only (in kph) correct to three decimal places. Selected Answer: 100.741
abdullahshahLv3
14 May 2023
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