Answer Happy

Use the sample data and confidence level given below to complete parts (a) through (d). A research institute poll asked respondents if they acted to annoy a bad driver. In the poll, n = 2698, and x =913 who said that they honked. Use a 90% confidence level. Click the icon to view a table of z scores. (Round to three decimal places as needed.) b) Identify the value of the margin of error E. EO (Round to four decimal places as needed.) c) Construct the confidence interval [<p < (Round to three decimal places as needed.) d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below. O A. 90% of sample proportions will fall between the lower bound and the upper bound. B. One has 90% confidence that the sample proportion is equal to the population proportion. C. There is a 90% chance that the true value of the population proportion will fall between the lower bound and the upper bound.
A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.02 with 99% confidence if a) she uses a previous estimate of 0.54? b) she does not use any prior estimates? a) n= (Round up to the nearest integer.) b) n = (Round up to the nearest integer.)