Are there more children diagnosed with Autism Spectrum Disorder (ASD) in states that have larger urban areas
Question:
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 olds diagnosed with ASD out of 18,440 eight year olds evaluated. In the state of Utah, a fairly rural state, there are 45 eight year olds diagnosed with ASD out of 2,123 eight year olds evaluated ("Autism and developmental," 2008). Estimate the difference in proportion of children diagnosed with ASD between Pennsylvania and Utah. Use a 98% confidence level.
Determine PPennsylvania and PUtah
enter both in decimal form to the nearest ten-thousandth
determine Z score corresponding to desired confidence level
enter both in decimal form to the nearest ten-thousandth
determine error bound of the proportion
enter both in decimal form to the nearest ten-thousandth
determine the confidence interval
enter lower bound value to the nearest tenthousand, followed by <, folowed by "p1-p2" for proportion difference
using the confidence interval select the correct description of the result of the survey
calculate the following number of arrangements
20C4