Use 6.86 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? Do not round intermediate calculations. Round yo answer up to the nearest whole number. 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? Do not round intermediate calculations. Round your answer up to the nearest whole number.

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**Sample Size Calculation for Margin of Error**

Use 6.86 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? Do not round intermediate calculations. Round your answer up to the nearest whole number.

[Text Box for Answer]

**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? Do not round intermediate calculations. Round your answer up to the nearest whole number.

[Text Box for Answer]
Transcribed Image Text:**Sample Size Calculation for Margin of Error** Use 6.86 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? Do not round intermediate calculations. Round your answer up to the nearest whole number. [Text Box for Answer] **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? Do not round intermediate calculations. Round your answer up to the nearest whole number. [Text Box for Answer]
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