Question: Using the large sample confidence interval formula for the mean, compute a 99% confidence interval for the mean when (a) ???? = 121, ???? =

Using the large sample confidence interval formula for the mean, compute a 99%

confidence interval for the mean when

(a) ???? = 121, ????̄ = 56.8, and ???? = 5.3.

(b) ???? = 198, ????̄ = 1.25, and ???? = 0.23.

(c) ???? = 238, ????̄ = 16.9, and ???? = 4.1.

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