Appropriate sample size to perform statistically valid study

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Reference no: EM131741911

You've been tasked to perform a time study analysis for a critical task in your department. A preliminary study indicated that the mean perform the task was 6.4 minutes with a standard deviation of 2.1 minutes. Your desired confidence level is 95% and the maximum error is plus/minus 10% of the sample mean. Determine the appropriate sample size to perform a statistically valid study.

Reference no: EM131741911

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