In 2007, of the 211,693 students who took the calculus AB exam 102,598 of them were female and 109,095 of them were male ("AP exam scores," 2013). Estimate using a 90% level the difference in proportion of female students taking the calculus AB exam versus male students taking the calculus AB exam. 5. Are there more children diagnosed with Autism Spectrum Disorder (ASD) in states that have larger urban areas over states that are mostly rural? In the state of Pennsylvania, a fairly urban state, there are 245 eight year old diagnosed with ASD out of 18,440 eight year old evaluated. In the state of Utah, a fairly rural state, there are 45 eight year old diagnosed with ASD out of 2,123 eight year old evaluated ("Autism and developmental,' 2008). Is there enough evidence to show that the proportion of children diagnosed with ASD in Pennsylvania is different than the proportion in Utah? Test at the 1% level. 6. Are there more children diagnosed with Autism Spectrum Disorder (ASD) in states that have larger urban areas over states that are mostly rural? In the state of Pennsylvania, a fairly urban state, there are 215 eight year old diagnosed with ASD out of 18,440 eight year old evaluated. In the state of Utah, a fairly rural state, there are 45 eight year old diagnosed with ASD out of 2.123 eight year old evaluated ("Autism and developmental