| Critical Value $z^*$ for a $C\%$ $z$-Confidence Interval: | $C=$ $\%$ | |
| Critical Value $z^*$ for a -Sided Test of Significance: | $\alpha=$ |
| Critical Value $z^*$ for a $C\%$ $z$-Confidence Interval: | $C=$ $\%$ | |
| Critical Value $z^*$ for a -Sided Test of Significance: | $\alpha=$ |