Based on population figures and other general information on the Canadian population, suppose it has been estimated that, on average, a family of four in Canada has about $1,135 annually in dental expenditures. Suppose further that a regional dental association wants to determine if this figure is accurate for its area of the country. To test this, 22 families of four are randomly selected from the population in that area of the country and a log is kept of the family’s dental expenditures for one year. The resulting data are given below. Assuming that dental expenditures are normally distributed in the population, use the data and an α of 0.05 to test the dental association’s hypothesis.

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1,008 812 831 1,021 699 872 1,695 995 1,117 1,323 1,287 851 913 1,003 944 994 1,308 930 954 1,415 730 987