Posted by **BV** on Friday, April 22, 2011 at 6:34pm.

In a city, 20% of the workers have incomes over $40,000 per year. A researcher chooses 1600 workers at random (with replacement) and finds that the mean is 320 and standard deviation is 16. what is the chance that between 320 and 336 of those have incomes over $40,000 per year?

## Answer This Question

## Related Questions

- statistics - help! where do i begin with this problem...in one area, monthly ...
- statistics - An average office worker uses 10000 sheets of paper each year. ...
- Statistics - 1. A study of 40 people found that they could do on the average15 ...
- Quantitative Methods - The monthly income of residents of Daisy City is normally...
- Quantitative Methods II - The monthly income of residents of Daisy City is ...
- probs & stats - 1. A study of 40 people found that they could do on the ...
- statistics - 3. The personnel director of a corporation will study the overtime ...
- Math : Probability and Standard Deviation - This is a word problem. "We know ...
- Stats - workers at a large toxic cleanup project are concerned that their white ...
- math - . A factory employing a large number of workers finds that over a period ...

More Related Questions