11. In a sample of 200 steel wires, the average breaking length is 60 kN and the standard deviation was 3 kN. a. Find

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answerhappygod
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11. In a sample of 200 steel wires, the average breaking length is 60 kN and the standard deviation was 3 kN. a. Find

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11.In a sample of 200 steel wires, the average breakinglength is 60 kN and the standard deviation was 3 kN.a. Find a 95% confidence interval for themeanefficiencyb. Find a 98% confidence interval for themeanefficiencyc. The production team wants the meanefficiency isbetween 59.9 kN and 60.1 kN. With what level ofconfidence, they made this statement?d. How many steel wires must be sampled sothat a95% confidence interval specifies the mean efficiency towithin ±0.25 percent?
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