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

question 41

Multiple Choice

Do one of the following, as appropriate: (a) Find the critical value $\mathrm { z } _ { \alpha / 2 } \text {, (b) find the critical value } \mathrm { t } _ { \alpha / 2 }$ , (c) state that
neither the normal nor the t distribution applies.
- $90 \% ; n = 9 ; \sigma = 4.2$ ; population appears to be very skewed.

• A) \(\mathrm { z } _ { \alpha / 2 } = 2.365\)
• B) \(\mathrm { z } _ { \alpha / 2 } = 2.896\)
• C) Neither the normal nor the \(t\) distribution applies.
• D) \(\mathrm { z } _ { \alpha / 2 } = 2.306\)

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