Do one of the following, as appropriate: (a) Find the critical value$ z_{?/2}$, (b) find the critical value $ t_{?/2}$, (c) state that neither the normal nor the t distribution applies
-$98 \% ; \mathrm { n } = 7 ; \sigma = 27 ;$ population appears to be normally distributed.
A) $\mathrm { t } _ { \alpha / 2 } = 1.96$
B) $\mathrm { z } _ { \alpha / 2 } = 2.33$
C) $\mathrm { t } _ { \alpha / 2 } = 2.575$
D) $\mathrm { z } _ { \alpha / 2 } = 2.05$

Question

Quizplus · Accepted Answer

The population appears to be normally distributed, so the normal distribution applies. The critical value for a 98% confidence level is $ z_{0.01} = 2.33 $.

Do One of the Following, as Appropriate: (A) Find the Critical