Posted by **molebogeng** on Thursday, April 12, 2012 at 4:01am.

Question 6: A manufacturer knows that the number of items produced per hour by its two factories A and B is normally distributed with standard deviations 8.0 and 11.0 items respectively. The mean hourly amount produced by Firm A from a random sample of 50 hours is 120 units and that by Firm B from a random sample of 30 hours is 110 units. Find the 95% confidence interval for the difference in the means and comment on the estimated interval.

## Answer This Question

## Related Questions

- math - the cost per hour of running an assembly line in a manufacturing plant is...
- statistics - A manufacturer knows that their items have a normally distributed ...
- Phoenix - In planning for a new item, a manufacturer assumes that the number of ...
- Data Analysis - A manufacturing company wishes to estimate the number of items ...
- Statistics - I am so lost on this statistics question would someone help me ...
- Z table - The extract of a plant native to Taiwan has been tested as a possible ...
- statistics - otorola discovered that the average defect rate for parts produced ...
- Statistics - The lifetimes of batteries produced by a firm are known to be ...
- statistics - Please let me know if I solved this right The lifetime of ...
- algebra - Three firms carry inventories that differ in size. Firm A's inventory ...

More Related Questions