Mathematics, 23.07.2020 20:01 rita53
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.
Answers: 1
![= [60 - \frac{1.97993 \times 11}{\sqrt{121} }] , [60 + \frac{1.97993 \times 11}{\sqrt{121} }]](/tpl/images/0711/9483/408f0.png)
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The Highway Safety Department wants to study the driving habits of individuals. A sample of 121 cars...
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