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

a.95% confidence for=20,=4.5, andn=64

b.98% confidence for=118.6,=20.89, andn=73

c.90% confidence for=3.419,=0.946, andn=34

d.80% confidence for=60.7,=9.1,N=500, andn=47

*(Round your answer to 2 decimal places.) **(Round your answer to 3 decimal places.)

a.

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b.

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c.

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d.

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Please help I have no idea how to do this problem thank you!