Posted by **Anonymous** on Tuesday, May 1, 2012 at 8:54pm.

An estimate of the time required to perform a certain job is needed. The study yielded a mean of 6.4 minutes and a standard deviation of 2.1 minutes. The desired confidence is 0.95. How many observations will be needed if the desired maximum error is:

a. +or – 10% of the sample mean

b. ½ minute

## Answer This Question

## Related Questions

- statistics - A basketball scout randomly selected 144 players and timed how long...
- business statistics - For one of the tasks in a manufacturing process, the mean ...
- statistics - An employer wants to estimate to set a time limit so that 75% of ...
- Stats - It is known that the amount of time needed to change the oil in a car is...
- Statistics - 1. In developing patient appointment schedules, a medical center ...
- statistics - Use the given information to find the minimum sample size required ...
- Statistics - It is known that the amount of time needed to change the oil in a ...
- Math - The mean time to complete a certain stat quiz is 25 minutes, with a ...
- Statistics - A pharmaceutical company claims its new medication relieves painful...
- statistics - A bus company official wanted to estimate the mean time for the ...

More Related Questions