Preliminary observations indicated average job completion time of a task is 10.40 minutes with standard deviation...
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Preliminary observations indicated average job completion time of a task is 10.40 minutes with standard deviation = 1.20 minutes for a worker with a performance rating of 125%. What is the total number of observations that needs to be done if you want to be 11 min error limit and 95% confident about your results (std. normal value(z) for 95 % level is 1.64): (5 points) 2.71 If you found an average of 11 minutes as the observed time, what is the normal job completion time considering the employee mentioned above? (5 points) 13.75 c) What is the standard time using the allowance specified (Assume an allowance of 16% of job time.): (5 points) 16.37 Preliminary observations indicated average job completion time of a task is 10.40 minutes with standard deviation = 1.20 minutes for a worker with a performance rating of 125%. What is the total number of observations that needs to be done if you want to be 11 min error limit and 95% confident about your results (std. normal value(z) for 95 % level is 1.64): (5 points) 2.71 If you found an average of 11 minutes as the observed time, what is the normal job completion time considering the employee mentioned above? (5 points) 13.75 c) What is the standard time using the allowance specified (Assume an allowance of 16% of job time.): (5 points) 16.37
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