Do One of the Following, as Appropriate:
(A) Find $= \alpha / 2 ,$

question 8

Multiple Choice

Do one of the following, as appropriate:
(a) Find the critical value $= \alpha / 2 ,$
(b) find the critical value $t _ { \alpha / 2 } { } ^ { \circ }$
99 % ; n=17 ; $\alpha$ is unknown; population appears to be normally distributed.

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

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