null hypothesis

  1. A

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    A Type II error occurs when: a. the null hypothesis is incorrectly rejected when it is true b. the test is biased c. the sample mean differs from the population mean d. the null hypothesis is incorrectly accepted when it is false
  2. A

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    Which of the following is true of the null and alternative hypotheses? a. Exactly one hypothesis must be true b. both hypotheses must be true c. It is possible for both hypotheses to be true d. It is possible for neither hypothesis to be true
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