Observations of the speed of cars at a certain site on a highway yielded the following 95% confidence interval for the average speed u: 60 ± 5 miles per hour. What is the correct interpretation (meaning) of this confidence interval statement? O 95% of all cars on this highway site have a speed between 55 and 65 O We are 95% confident that the average speed of all cars on this highway site is betwcen 55 and 65 95% of all cars on this highway segment have a speed between 50 and 70 The mean speed of all cars on this highway site is between 55 and 65

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