An Industrial Engineer Is Conducting a Time Study for a Work

question 66

Multiple Choice

An industrial engineer is conducting a time study for a work element.The select time is 4.5 minutes,and the sample standard deviation of the observed time is 20 seconds.What is the appropriate sample size if the estimate is to be 5 percent of the true average time 95 percent of the time?

• A) Fewer than or equal to seven
• B) Greater than seven but fewer than or equal to eight
• C) Greater than eight but fewer than or equal to nine
• D) Greater than nine

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