8.41 If the inspection division of a county weights and measures department wants to estimate the mean amount of soft-drink fill in 2-liter bottles to within liter with 95% confidence and also assumes that the standard deviation is 0.05 liter, what sample size is needed? 8.42 A consumer group wants to estimate the mean electric bill for the month of July for single-family homes in a large city. Based on studies conducted in other cities, the standard deviation is assumed to be $25. The group wants to estimate, with 99% confidence, the mean bill for July to within . ;$5
Solution ID:10137854 | Question answered on 16-Oct-2016
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