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level of confidence can this statement be made Approximately how many batteries

ID: 3059140 • Letter: L

Question

level of confidence can this statement be made Approximately how many batteries must be sampled so that a 95% confidence interval will specify the mean to within ±2 ampere-hours? Is that have e.) Approximately how many batteries must be sam- pled so that a 99% confidence interval will specify the mean to within ±2 ampere-hours? y goes tions: 6. Resistance measurements were made on a sample of 81 wires of a certain type. The sample mean resis- tance was 17.3 mS2, and the standard deviation was 1.2 m2. ights a)Find a 95% confidence interval for the mean resis- ans- ing ur- er Find a 98% confidence interval for the mean resis- c. What is the level of the confidence interval d. How many wires must be sampled so that a 98% tance of this type of wire. tance of this type of wire. (17.1, 17.5)? confidence interval will specify the mean to within ±0.1 m2? e) How many wires must be sampled so that a 95% confidence interval will specify the mean to within ±0.1 m2? 7. In a sample of 100 boxes of a certain type, the average

Explanation / Answer

level of confidence can this statement be made Approximately how many batteries must be sampled so that a 95% confidence interval will specify the mean to within ±2 ampere-hours? Is that have e.) Approximately how many batteries must be sam- pled so that a 99% confidence interval will specify the mean to within ±2 ampere-hours? y goes tions: 6. Resistance measurements were made on a sample of 81 wires of a certain type. The sample mean resis- tance was 17.3 mS2, and the standard deviation was 1.2 m2. ights a)Find a 95% confidence interval for the mean resis- ans- ing ur- er Find a 98% confidence interval for the mean resis- c. What is the level of the confidence interval d. How many wires must be sampled so that a 98% tance of this type of wire. tance of this type of wire. (17.1, 17.5)? confidence interval will specify the mean to within ±0.1 m2? e) How many wires must be sampled so that a 95% confidence interval will specify the mean to within ±0.1 m2? 7. In a sample of 100 boxes of a certain type, the average