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Management in a large hospital is planning to install a computer to reduce the time spent by nurses doing paperwork. First, management needed to
Management in a large hospital is planning to install a computer to reduce the time spent by nurses doing paperwork. First, management needed to know how much time nurses spend doing paperwork in order to estimate the potential savings from the computer installation. A work sampling study comprising 500 observations taken at random over a week yielded the following data: Activity Attending to patients Moving between stations Consulting with doctors Taking a break or idle Doing paperwork Number of observation 180 40 60 50 270 a) Estimate the proportion of time that the nurses spend doing paperwork. b)What is the absolute error(1) of the percent of doing paperwork? (95% CI) c) What is the relative error of the percent of doing paperwork? d) What is 95% confidence interval of the paper working? In sense of Relative and Absolute accuracy -both are asked!!!!- e)Estimate the daily loss for three shift (8 hr*3shift/per day) (in hr and $) due to doing paperwork. If an hour of a nurse's time costs the hospital $40, estimate the annual savings in cost if the installation of the computer cuts time spent on paperwork by 80 percent. Assume 24 hours per day, 365 days per year of operation. f)Suppose that an estimate of doing paperwork within 4 percentage points (absolute), either way, is required. How many more observations should be taken? g)What will be the point estimate of the doing paperwork time after the additional observations are taken? h)Suppose the output of paperwork (done by four nurses) were 1,800 filled formular during 40-hour week. If a performance rating of 1.05 and an allowance of 10 percent are given (in PDF2 style), what is the standard output (unit/hr and unit/8 hr) for this task? i)Prove your answer of h) j)What is the unit cost of the filled formulars in h) k)What can be said about the operators performance rating when total of 1500 of formulas were filled.
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Operations Management Processes and Supply Chains
Authors: Lee J. Krajewski, Manoj K. Malhotra, Larry P. Ritzman
12th edition
134741064, 9780273766834, 027376683X, 9780273766940, 273766945, 9780273766841, 273766848, 978-0134741062
