SOLUTION: Estimate the true mean skidding distance for the road with a 99% confidence interval for the following values. 489,347,459,195,290,406,575,436,550,384,295,434,183,262,270,402,31

Algebra ->  Probability-and-statistics -> SOLUTION: Estimate the true mean skidding distance for the road with a 99% confidence interval for the following values. 489,347,459,195,290,406,575,436,550,384,295,434,183,262,270,402,31      Log On


   

Question 1135898: Estimate the true mean skidding distance for the road with a 99% confidence interval for the following values.
489,347,459,195,290,406,575,436,550,384,295,434,183,262,270,402,315,311,144,427
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
The 99% CI is (283.07, 434.33)
One obtains the mean (358.7) and the sd s (118.22)
The CI is mean +/- t df=19, 0.995*s/sqrt(n)
On the calculator can do t-interval, DATA, and 99%