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Use the following information to construct the confidence intervals specified to estimate μ. a. 95% confidence...

Use the following information to construct the confidence intervals specified to estimate μ.

a. 95% confidence for x¯ = 20, σ = 2.5, and n = 60
b. 98% confidence for x¯ = 124.6, σ = 19.89, and n = 78
c. 90% confidence for x¯ = 2.419, σ = 0.868, and n = 34
d. 80% confidence for x¯ = 54.7, σ = 8.1, N = 500, and n = 48

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