Question: A sample of size n = 35 has sample mean x = 34.85 and sample standard deviation s = 17.9. a. Construct a 98% confidence

A sample of size n = 35 has sample mean ̄x = 34.85 and sample standard deviation s = 17.9.

a. Construct a 98% confidence interval for the population mean σ.

b. If the confidence level were 95%, would the confidence interval be narrower or wider?

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