Mathematics, 09.12.2021 04:20, sofo24

We have a sample of 50 micro-drills for drilling holes in low-carbon alloy steel. The average lifetime, expressed as the number of holes drilled before failure, is 12.68. The standard deviation of the sample of 50 is 6.83 holes. Find the 95% confidence interval for this sample.

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We have a sample of 50 micro-drills for drilling holes in low-carbon alloy steel. The average lifeti...