Which of the Following Statements Are Not True If a Test

question 2

Multiple Choice

Which of the following statements are not true if a test procedure about the population mean $\mu$ is performed when the population is normal with known standard deviation $\sigma$ ?

• A) The rejection region for level \(\alpha\)
• Test is \(z \geq z _ { \alpha}\)
• If the test is an upper-tailed test.
• B) The rejection region for level \(\alpha\)
• Test is \(z \geq z _ { \alpha / 2 }\)
• If the test is an upper-tailed test.
• C) The rejection region for level \(\alpha\)
• Test is \(z \leq - z _ { \alpha }\)
• If the test is a lower-tailed test.
• D) The rejection region for level \(\alpha\)
• Test is either \(z \geq z _ { \alpha/ 2 }\)
• Or \(z \leq - z _ { \alpha/2 }\)
• If the test is a two-tailed test.
• E) None of the above statements are true.

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