Posted by **Brenda** on Saturday, December 3, 2011 at 2:03pm.

Given the following information, determine the sample size needed if the standard time estimate is to be within 5 percent of the true mean 99 percent of the time.

Work Element

Standard Deviation (minutes)

Mean Observed Time (minutes)

1

0.20

1.10

2

0.10

0.80

3

0.15

0.90

4

0.10

1.00

(Round your answer to the nearest whole number, the tolerance is +/-1.)

## Answer this Question

## Related Questions

math-true/false - 9.)The actual weight of 2-pound sacks of salted peanuts is ...

statistics - Use the given information to find the minimum sample size required ...

statistics - what are the mean and standard deviation of a sampling distribution...

statistics - An IQ is designed so that the mean is 100 and the standard ...

math - A traffic engineer plans to estimate the average number of cars that pass...

Statistics - An IQ test is designed so that the mean is 100 and the standard ...

statistics - A cell phone service provider has selected a random sample of 20 of...

Advanced Production - A time study od a certain service task found a average ...

math - A standard IQ test has a mean of 98 and a standard deviation of 16. We ...

math - A bond has an average return of 6.8 percent and a standard deviation of 4...