Mathematics, 20.11.2019 17:31 sarahlearn3

The highway safety department wants to study the driving habits of individuals. a sample of 38 cars traveling on a particular stretch of highway revealed an average speed of 70.9 miles per hour with a standard deviation of 7.8 miles per hour. round to 4 decimal places. 1.calculate a 95% confidence interval for the true mean speed of all cars on this particular stretch of highway.

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The highway safety department wants to study the driving habits of individuals. a sample of 38 cars...