Asked by Jenica Reams on May 02, 2024
Verified
The Highway Safety Department wants to study the driving habits of individuals.A sample of 121 cars traveling on the highway revealed an average speed of 60 miles per hour with a standard deviation of 11 miles per hour.Determine a 95% confidence interval estimate for the speed of all cars.
Confidence Interval
A statistical range, with a given probability, that is likely to contain the true value of an unknown population parameter.
Average Speed
A measure of the total distance traveled divided by the total time taken for the trip, used in various contexts to indicate speed consistency.
- Establish confidence intervals to encapsulate population means, irrespective of the clarity on population standard deviations.
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IG
Learning Objectives
- Establish confidence intervals to encapsulate population means, irrespective of the clarity on population standard deviations.