Do one of the following, as appropriate: (a) Find the critical value $z _ { \alpha / 2 }$, (b) find the critical value $t _ { \alpha / 2 }$, (c) state that neither the normal nor the t distribution applies.
90% confidence interval for $\mu ; \quad n = 9 ; \sigma = 4.2$ population appears to be very skewed.
A) $z _ { a / 2 } = 2.896$
B) $z _ { \alpha / 2 } = 2.365$
C) $z _ { \alpha / 2 } = 2.306$
D) Neither the normal nor the t distribution applies.

Question

Do one of the following, as appropriate: (a) Find the critical value $z _ { \alpha / 2 }$, (b) find the critical value $t _ { \alpha / 2 }$, (c) state that neither the normal nor the  t  distribution applies.
 90%  confidence interval for $\mu ; \quad n = 9 ; \sigma = 4.2$ population appears to be very skewed.
A) $z _ { a / 2 } = 2.896$
B) $z _ { \alpha / 2 } = 2.365$
C) $z _ { \alpha / 2 } = 2.306$
D) Neither the normal nor the  t  distribution applies.

Quizplus · Accepted Answer

The Answer is D

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