a. Nationally, social workers average 10.2 years of experience. In a random sample, 203 social workers in the greater metropolitan area of Pearson, Ontario, average only 8.7 years with a standard...

a. Nationally, social workers average 10.2 years of experience. In a random sample, 203 social workers in the greater metropolitan area of Pearson, Ontario, average only 8.7 years with a standard deviation of 0.52. Are social workers in Pearson, Ontario, significantly less experienced?

b. The same sample of social workers reports an average annual salary of $35,782 with a standard deviation of $622. Is this figure significantly higher than the national average of $34,509?