1. It is the statistical method used in making decisions using experimental data. A. observation C. analytical testing B. simple analysis D. hypothesis testing 2. What term is being used to describe a proposed explanation, assertion, or assumption about a population parameter or about the distribution of a random variable? A. statistic B. decision C. hypothesis D. probability 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 B. level of hypothesis D. level of significance 4. Which of the following would be an appropriate null hypothesis? A. The mean of a sample is equal to 80. B. The mcan of a population is equal to 80. C. The mean of a population is not equal to 80. D. The mcan of a population is greater than 80.