Calculate the confidence intervals for assuming the sample

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Use the sample information x¯x¯ = 40, σnμ (a) The 90% confidence interval is from to (b) = 4, = 20 to calculate the following confidence intervals for assuming the sample is from a normal population.

90 percent confidence. (Round your answers to 4 decimal places.)

95 percent confidence. (Round your answers to 4 decimal places.)

The 95% confidence interval is from to

(c) 99 percent confidence. (Round your answers to 4 decimal places.)

The 99% confidence interval is from to

Reference no: EM132857720

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