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

question 139

Multiple Choice

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.
- $99 \% ; \mathrm { n } = 17 ; \sigma$ is unknown; population appears to be normally distributed.

• A) \(\mathrm { t } _ { \alpha / 2 } = 2.898\)
• B) \(\mathrm { z } _ { \alpha / 2 } = 2.567\)
• C) \(\mathrm { z } _ { \alpha / 2 } = 2.583\)
• D) \(t _ { \alpha / 2 } = 2.921\)

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