Question: What \[{{z}^{*}}\] value corresponds to a 88% confidence level. Develop your answer, don't just provide it. Remember that \[{{z}^{*}}\] > 0. Start with the fact that we need a \[{{z}^{*}}\] such that \[P(-{{z}^{*}}<z<+{{z}^{*}})\] = area under the standard normal curve from \[z=-{{z}^{*}}\] to \[z=+{{z}^{*}}\] = 0.88.