# Question

The data in the table below represent time study observations for a woodworking operation.

a. Based on the observations, determine the standard time for the operation, assuming an allowance of 15 percent of job time.

b. How many observations would be needed to estimate the mean time for element 2 within 1 percent of its true value with a 95.5 percent confidence?

c. How many observations would be needed to estimate the mean time for element 2 within .01 minute of its true value with a 95.5 percentconfidence?

a. Based on the observations, determine the standard time for the operation, assuming an allowance of 15 percent of job time.

b. How many observations would be needed to estimate the mean time for element 2 within 1 percent of its true value with a 95.5 percent confidence?

c. How many observations would be needed to estimate the mean time for element 2 within .01 minute of its true value with a 95.5 percentconfidence?

## Answer to relevant Questions

How many observations should a time study analyst plan for in an operation that has a standard deviation of 1.5 minutes per piece if the goal is to estimate the mean time per piece to within .4 minute with a confidence of ...A hospital administrator thinks that the X-ray equipment is only in use about 20 percent of the time. What number of observations in a work sampling study would be needed to estimate the true percentage of time to within 5 ...An aircraft company has an order to refurbish the interiors of 18 jet aircraft. The work has a learning curve percentage of 80. On the basis of experience with similar jobs, the industrial engineering department estimates ...The labor cost to produce a certain item is $ 8.50 per hour. Job setup costs $ 50 and material costs are $ 20 per unit. The item can be purchased for $ 88.50 per unit. The learning rate is 90 percent. Overhead is charged at ...A research analyst performs database searches for a variety of clients. According to her log, a new search requires approximately 55 minutes. Repeated requests on the same or similar topic take less and less time, as her log ...Post your question

0