3. It is also referred to as a probability of committing an incorrect decision about the null hypothesis. A. level of error C. level of acceptance D. level of significance B. level of hypothesis 4. Which of the following would be an appropriate null hypothesis? A. The mean of a sample is equal to 80. B. The mean of a population is equal to 80. C. The mean of a population is not equal to 80. D. The mean of a population is greater than 80.

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