Question: You are told that a 95% CI for expected lead content when traffic flow is 15, based on a sample of n = 10 observations,

You are told that a 95% CI for expected lead content when traffic flow is 15, based on a sample of n = 10 observations, is (462.1, 597.7). Calculate a CI with confidence level 99% for expected lead content when traffic flow is 15?

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