Question: An industrial engineer is performing a time study and knows that 70 minutes are normally devoted to rest periods and lunch, but an allowance for

An industrial engineer is performing a time study and knows that 70 minutes are normally devoted to rest periods and lunch, but an allowance for unavoidable delay must be estimated. A ratio-delay work-sampling study was conducted, with the following results:

Activity

Number of Observations

Unavoidable delay

38

Avoidable delay

66

Other

446

Total

550

Question: please determine the allowance factor based on the above information. Please provide formula to determine the allowance factor.

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