Posted by **Patrick ** on Thursday, August 7, 2014 at 11:34am.

The mean lifetime of a sample of 100 light tubes is 1570 hours with a standard deviation of 80 hours test the hypothesis that the mean lifetime of the tubes is 1600 hours

## Answer This Question

## Related Questions

- business statitics - a) The mean lifetime of a sample of 100 light tubes ...
- statistics - A manufacturer claims that the mean lifetime of its lithium ...
- statics - The standard deviation of the lifetime of certain TV picture tubes is...
- Statistics - The lifetime of a certain smart phone battery has an unknown ...
- Statistics - The lifetime of a certain smart phone battery has an unknown ...
- Statistics - A company has developed a new type of light bulb, and wants to ...
- Statistics - Can anyone tell me how to use TI-84 calculator to solve this ...
- statistics - Solve the problem. The lifetime of a new brand of light bulb can be...
- STATISTICS HELP - The lifetime of a disk drive head is normally distributed with...
- statistics - The lifetime of a 2-volt non-rechargeable battery in constant use ...

More Related Questions