help with 8.1.8 and 8.2.6

Suppose you compute a confidence interval with a sample size of 100. What will happen to the confidence interval if the sample size decreases to 80? Decreasing the sample size from 100 to 80 causes the error bound to increase, making the confidence interval wider 8.1.8 In 2013, Gallup conducted a poll and found a 95% confidence interval of the proportion of Americans who believe it is the government's responsibility for health care. Give the statistical interpretation. 8.2.6 In 2008, there were 507 children in Arizona out of 32,601 who were diagnosed with Autism Spectrum Disorder (ASD) ("Autism and developmental," 2008). Find the proportion of ASD in Arizona with a confidence level of 99%. 8.3.6 The economic dynamism, which is the index of productive growth in dollars for countries that are