SOLUTION: 9.2.33 Based on interviews with 99 SARS patients, researchers found that the mean incubation period was 4.7 days, with a standard deviation of 15.2 days. Based on this informatio

Algebra ->  Probability-and-statistics -> SOLUTION: 9.2.33 Based on interviews with 99 SARS patients, researchers found that the mean incubation period was 4.7 days, with a standard deviation of 15.2 days. Based on this informatio      Log On


   

Question 1077160: 9.2.33
Based on interviews with 99 SARS patients, researchers found that the mean incubation period was 4.7 days, with a standard deviation of 15.2 days. Based on this information, construct a 95% confidence interval for the mean incubation period of the SARS virus. Interpret the interval.
The lowest bound is how many days?
The upper bound is how many days?

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
t df=98 (0.975)=1.984
1.984*15.2/sqrt (99)=3.03
(1.67, 7.73)
We do not know the true length of incubation, but we are highly confident it lies within the above interval.