Someone please explain 3. High school students take the AP tests in different subject areas. This year 150 students took the biology exam of which 85 were female. And, 220 students took the calculus exam of which 100 were female. Calculate the difference in the PROPORTION of female students taking the biology exam verses female students taking the calculus exam using a 95% confidence level 4. Are more children diagnosed with Autism Spectrum Disorder in States that have urban areas over States that are mostly rural? In an urban State there were are 300 3rd grade students diagnosed with ASD out of 18,500 3rd graders tested. In a rural state, there were 55 3rd grade students diagnosed with ASD out of 2,300 3rd graders tested. Is there enough evidence to show that the proportion of children diagnosed with ASD in an urban State is more than the proportion in a rural State? Test at the = 1% level