Posted by **Matt** on Wednesday, November 28, 2012 at 2:59am.

The Ledd Pipe Company has received a large shipment of pipes, and a quality control inspector wishes to

estimate the average diameter of these pipes. A random sample of 18 pipes produces an average diameter of

2.56 mm with a standard deviation of 0.05 mm. You may assume that the diameters of the pipes are normally

distributed.

(A) Give a 95% confidence interval for the average diameter of pipes in this shipment.

## Answer This Question

## Related Questions

- stats - The Ledd Pipe Company has received a large shipment of pipes, and a ...
- science - A pipe of diameter 80mm is fitted with a branch section into which fit...
- Physics - The 3.0 cm-diameter water line splits into two 1.0cm-diameter pipes. ...
- algebra - A pipe manufacturer makes pipes of four different sizes. The diameter ...
- algebra - A pipe manufacturer makes pipes of four different sizes. The diameter ...
- Advanced Maths - A reservoir is fed by two pipes of different diameter. The ...
- math - water flows into a reservoir at 2000l/min. the depth of the reservoir is ...
- Maths - 3 inlet pipes A,B and C can be used to fill 1000m^3 water storage tank...
- Physics - The water flowing through a 1.9 cm (inside diameter) pipe flows out ...
- Fluid Mechanics - Water flows into a cylindrical tank through pipe 1 at a rate ...

More Related Questions