Question: Consumer preferences have been observed in a situation for which the standard error is known. Find the critical t value to use for each of

Consumer preferences have been observed in a situation for which the standard error is known. Find the critical t value to use for each of the following confidence interval calculations:

a. Two-sided 95% confidence.

b. Two-sided 99% confidence.

c. Two-sided 99.9% confidence.

d. Two-sided 90% confidence.

e. One-sided 95% confidence.

f. One-sided 99% confidence.

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