years, with a standard deviation of 0.52. Are social workers in Shinbone significantly less experienced? (Note the wording of the research hypotheses. These situations may justify one-tailed tests of significance. If you chose a one-tailed test, what form would the research hypothesis take, and where would the critical region begin?)

b. The same sample of social workers reports an average annual salary of $25,782, with a standard deviation of $622. Is this figure significantly higher than the national average of

$24,509? (The wording of the research hypotheses suggests a one-tailed test. What form would the research hypothesis take, and where would the critical region begin?)