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2. The administrator of a nursing home would like to do a time-and-motion study of staff time spent per day performing nonemergency tasks. Prior to the introduction of some efficiency measures, the average person-hours per day spent on these tasks was u = 16. How many days must be sampled to test the proposed hypothesis given that a = 0.05, with a margin of 1.2. Assume o = 7.64. [4 Marks] andorn