A methods and measurements analyst for Digital Devices needs to develop a time standard for the task of assembling a computer mouse. In a preliminary study, she observed one of her workers perform this task six times with the following results: Observation 1 2 3 4 5 6 Time(Seconds) 46 38 40 34 42 40 What is the standard time for this task if the employee worked at a 20 percent faster pace than average and an allowance of 25 percent of the workday is used.1. What is the observed time for this task?
2. What is the normal time for this task if the employee worked at a 20 percent faster pace than average?
3. What is the standard time for this task if the employee worked at a 20 percent faster pace than average and an allowance of 25 percent of job time is used?
4. How many observations should be made if she wants to be 86.64 percent confident that the maximum error in the observed time is .5 second? Assume that the standard deviation of the task time is four seconds.