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Efficient manufacturing: Efficiency experts study the processes used to manufacture items in order to make them as effic
Posted: Mon Jul 11, 2022 11:29 am
by answerhappygod
- Efficient Manufacturing Efficiency Experts Study The Processes Used To Manufacture Items In Order To Make Them As Effic 1 (43.66 KiB) Viewed 24 times
Efficient manufacturing: Efficiency experts study the processes used to manufacture items in order to make them as efficient as possible. One of the steps used to manufacture a metal clamp involves the drilling of three holes. In a sample of 65 clamps, the mean time to complete this step was 48.1 seconds. Assume that the population standard deviation is a = 9 seconds. Round the critical value to no less than three decimal places. Part: 0 / 2 Part 1 of 2 (a) Construct a 99.8% confidence interval for the mean time needed to complete this step. Round the answer to at least one decimal place. A 99.8% confidence interval for the mean is <μ< 3 Españ olo
(b) Find the sample size needed so that a 90% confidence interval will have margin of error of 1.5. A sample size of is needed in order to obtain a 90% confidence interval with a margin error of 1.5. Round the sample size up to the nearest integer.