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Answers of this ques is 9 i want know how we get 9 as an answers Initial observations of a time-study resulted in the following

Answers of this ques is 9 i want know how we get 9 as an answers

Initial observations of a time-study resulted in the following summary results: Element Averaged Observed Time Range A B C D E 35 9 22 18 6 4 2 3 3 1 The required sample size is... (please round up) 76 29 19 53 10 None of the choices is correct 9 56

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