1. Are the following statements: H0: µ ≥ 4 H1: µ ≤ 17 a valid pair of null and alternative hypothesis? 2. In performing hypothesis tests about the population mean, the population standard deviation should be used if it is known. If it is not known and the sample size is small, which of the following statistical tests should be used? 3. The first step in testing a hypothesis is to establish _______. 4. The rejection and non-rejection regions are divided by a point called the _______. 5. Consider the following null and alternative hypotheses. H0: μ ≤ 7 H1: μ > 6 These hypotheses _______________.