Posted by **Anonymous** on Saturday, December 8, 2012 at 8:21pm.

Ramdom sample of 41 car owners results in a mean of 7 years. Population standard deviation of 3.75 years. Find a 95% confidence interval for the true population mean..My answer is

(5.9, 8.1) but having problems with margin of error

## Answer This Question

## Related Questions

- Statistics - Which of the following statements correctly interprets a 95% ...
- statistics - 5) The lifetime of a medical device s a normally distributed rv ...
- statistics - 1.A magazine reported that 6% of Americans read the news paper ...
- statistics - A simple random sample of 60 items resulted in a sample mean of 80...
- stats - The president of a large university wishes to estimate the average age ...
- statistics - In a survey randomly selected subjects, the mean age of the 36 ...
- Statistics - An admissions director wants to estimate the mean age of all ...
- Statistics (42) - A simple random sample of 60 items resulted in a sample mean ...
- Math Statistics - 5. Students in an introductory statistics class were asked to ...
- Statistics - 1. A study of 40 people found that they could do on the average15 ...

More Related Questions