Question: Find each.

a. \({{z}_{\alpha /2}}\) for the 99% confidence interval

b. \({{z}_{\alpha /2}}\) for the 98% confidence interval

c. \({{z}_{\alpha /2}}\) for the 95% confidence interval

d. \({{z}_{\alpha /2}}\) for the 90% confidence interval

e. \({{z}_{\alpha /2}}\) for the 94% confidence interval