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Consider a normal population with an unknown population standard deviation. A random sample results in 11formula80.mmlx...

Consider a normal population with an unknown population standard deviation. A random sample results in 11formula80.mmlx − x− = 59.85 and s2 = 14.44. a. Compute the 95% confidence interval for μ if x bar and s2 were obtained from a sample of 5 observations. b. Compute the 95% confidence interval for μ if x bar and s2 were obtained from a sample of 12 observations

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The standard deviation is

(a)

(b)

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