• • 10.22 A hotel housekeeper, Alison Harvey, was observed five times on each of four task elements, as shown in the following table. On the basis of these observations, find the standard time for the process. Assume a 10% allowance factor.

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OBSERVATIONS (MINUTES PER CYCLE) ELEMENT PERFORMANCE RATING (%) 1 2 3 4 5 Check minibar 100 1.5 1.6 1.4 1.5 1.5 Make one bed 90 2.3 2.5 2.1 2.2 2.4 Vacuum floor 120 1.7 1.9 1.9 1.4 1.6 Clean bath 100 3.5 3.6 3.6 3.6 3.2