Do one of the following, as appropriate: (a) Find the critical value $\mathrm { z } _ { \alpha / 2 }$ , (b) find the critical value $t _ { \alpha / 2 }$ , (c) state that
neither the normal nor the t distribution applies.
-$95 \% ; \mathrm { n } = 11 ; \sigma$ is known; population appears to be very skewed.
A) $\mathrm { z } _ { \alpha / 2 } = 1.96$
B) $\mathrm { t } _ { \alpha / 2 } = 2.228$
C) $\mathrm { z } _ { \alpha / 2 } = 1.812$
D) Neither the normal nor the $t$ distribution applies.

Question

Quizplus · Accepted Answer

Since the population is very skewed and the sample size is small (n=11), neither the normal nor the t distribution is appropriate.

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