Question

# Find the levels of the confidence intervals that have the following values of z_{\alpha &#x2F; 2}: a. z_{\alpha &#x2F; 2}=1.96 b. z_{\alpha &#x2F; 2}=

Confidence intervals

Find the levels of the confidence intervals that have the following values of $$\displaystyle{z}_{{\frac{\alpha}{{2}}}}$$:
a. $$\displaystyle{z}_{{\frac{\alpha}{{2}}}}={1.96}$$
b. $$\displaystyle{z}_{{\frac{\alpha}{{2}}}}={2.17}$$
c. $$\displaystyle{z}_{{\frac{\alpha}{{2}}}}={1.28}$$
d. $$\displaystyle{z}_{{\frac{\alpha}{{2}}}}={3.28}$$