An employer wants to set a time limit so that 90% of the employees will finish a job on time. Past historyhas shown that the time required to do the job is normally distributed and has a meantime of 32 minutes with a standard deviationof 6 minutes. How much time should the employer allow employees to finish the job? (Round up to the nearest minute.)
The z value for 90% is: 1.2816
Using the z formula:
z = (x-mean)/standard …
Step by step solution to the problem is provided.