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

question 97

Multiple Choice

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
- $90 \% ; \mathrm { n } = 10 ; \sigma$ is unknown; population appears to be normally distributed.

• A) \(t _ { \alpha / 2 } = 1.812\)
• B) \(\mathrm { t } _ { \alpha / 2 } = 1.833\)
• C) \(\mathrm { z } _ { \alpha / 2 } = 1.383\)
• D) \(\mathrm { z } _ { \alpha / 2 } = 2.262\)

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