Of the following situations, which is the most appropriate to use the Excel function =-T.INV(0.10,1500) to compute the critical value?

(a)

The analyst is constructing a confidence interval for mean (variance unknown) with 90% confidence and a sample size of 1501.

(b)

The analyst is constructing a confidence interval for proportion with 90% confidence and a sample size of 1500.

(c)

The analyst is constructing a confidence interval for mean with 80% confidence and sample size of 1501.

(d)

The analyst is constructing a confidence interval for mean (variance unknown) with 80% confidence and a sample size of 1500.

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Submitted answer

Submitted at 2023-10-25 13:15:22 (CDT)

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(d) The analyst is constructing a confidence interval for mean (variance unknown) with 80% confidence and a sample size of 1500.