1. A guidance counselor wishes to determine if the proportion of high school girls in his school district who have jobs are equal to the national average. He surveys 80 female students, ages 16 through 18, to determine if they work or not. The results are shown:

	16-year-olds	17-year-olds	18-year-olds
Work	45	31	38
Don't work	35	49	42

With = 0.01, can the researcher claim that the proportions of the girls who work are equal?