Question: 25. Computer-Assisted Training. Refer to the Scheer Industries example in Section 8.2. Use 6.84 days as a planning value for the population standard deviation. a.

25. Computer-Assisted Training. 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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