Posted by **Jasmine** on Sunday, March 25, 2012 at 2:38am.

Computer Depot is a large store that sells and repairs computers. A random sample of 110 computer repair jobs took technicians an average of 93.2 minutes per computer. Assume that o is known to be 16.9 minutes. Find a 99% confidence interval for the population mean u for the computer repairs. Interpret the interval in the context of this problem. State what assumptions were met to use the method you selected.

- Statistics -
**PsyDAG**, Sunday, March 25, 2012 at 2:05pm
For raw score, use SD, but for means, use Standard Error of the mean (SEm).

99% = mean ± 2.585 SEm

SEm = SD/√n

## Answer this Question

## Related Questions

- computer - I am interested in computer so i wanted to ask that what is computer ...
- Math-Advanced Pre-Algebra - A computer repair shop charges a flate rate of 50$ ...
- math - A computer technician has been assigned the task of cabling together five...
- statistics - c. The arrival of large jobs at a computer centre forms a Poisson ...
- Statistics - A computer repair service found that a random sample of 45 repair ...
- English - Let's write down what you can do with the computer. 1. I use the ...
- Math - In a computer lab there are two dierent printers. From 1pm-2pm Printer1 ...
- math - A small business just leased a new computer and color laser printer for ...
- statistics - Factories A, B and C produce computers. Factory A produces 3 times ...
- Statistics - It is reported that 72% of working women use computers at work. ...

More Related Questions