Use 6.89 days as a planning value for the population standard
deviation. Assuming 95% confidence, what...
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Use 6.89 days as a planning value for the population standarddeviation. Assuming 95% confidence, what sample size would berequired to obtain a margin of error of 1.5 days (round up to thenext whole number)? Assuming 90% confidence, what sample size wouldbe required to obtain a margin of error of 2 days (round up to thenext whole number)?
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Solution Given thatstandard deviation s 689Margin of error E 15At
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