Question

Refer to the Scheer Industries example in Section 8.2. Use 6.84 days as a planning value for the population standard deviation.
a. Assuming 95% confidence, what sample size would be required to obtain a margin of error of 1.5 days?
b. If the precision statement was made with 90% confidence, what sample size would be required to obtain a margin of error of 2 days?


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  • CreatedSeptember 20, 2015
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