Use the One-Proportion Z-Test to Perform the Specified Hypothesis Test

question 104

Multiple Choice

Use the one-proportion z-test to perform the specified hypothesis test. Use the critical-value approach.
- $\mathrm { x } = 18 , \mathrm { n } = 100 , \mathrm { H } _ { 0 } : \mathrm { p } = 0.2 , \mathrm { H } _ { \mathrm { a } } : \mathrm { p } \neq 0.2 , \alpha = 0.01$

• A)\(\mathrm { z } = - 0.500\); critical values \(= \pm 2.575\); do not reject \(\mathrm { H } _ { 0 }\)
• B) \(\mathrm { z } = - 0.500\); critical values \(= \pm 2.33\); do not reject \(\mathrm { H } _ { 0 }\)
• C) \(\mathrm { z } = - 0.310\); critical values \(= \pm 2.575\); do not reject \(\mathrm { H } _ { 0 }\)
• D) \(\mathrm { z } = - 0.310\); critical values \(= \pm 2.33\); reject \(\mathrm { H } _ { 0 }\)

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