4:55 PM Mon Feb 15 © 43% 88 00 OO Math Statistics · Untitled Notebook (1) Math Statistics T A 2010 survey asked 827 randomly sampled registered voters in California "Do you support? Or do you oppose?...

Can you please help me with the questions highlighted in blue/purple. Thank you in advance. You might need to zoom in a little bit but I wanted to show you the whole worksheet for context.

Extracted text: 4:55 PM Mon Feb 15 © 43% 88 00 OO Math Statistics · Untitled Notebook (1) Math Statistics T A 2010 survey asked 827 randomly sampled registered voters in California "Do you support? Or do you oppose? Drilling for oil and natural gas off the Coast of California? Or do you not know enough to say?" Below is the distribution of responses, separated based on whether or not the respondent graduated from college. ETTI College grad Noncollege grad Total Support 154 132 286 Oppose 180 126 306 Do not know 104 131 235 Total 438 389 827 a) What percent of college graduates in this sample do not know enough to have an opinion on drilling for oil and natural gas off the Coast of California? % (Round to the nearest tenth of a percent.) b) What percent of non-college graduates in this sample do not know enough to have an opinion on drilling for % (Round to the nearest tenth of a percent.) oil and natural gas off the Coast of California? c) Conduct a hypothesis test at the 5% significance level to determine if the data provide strong evidence that the proportion of college graduates who do not have an opinion on this issue is different than that of non- college graduates. Ho: PC – PNC ? V HA: PC PNc ? The point estimate (difference in sample proportions) is (Round to three decimal places, and note the order of subtraction in your hypotheses.) (The test statistic is - (Round to two decimal places.) The p-vatue is (Round to four decimat ptaces.) We should Select an answer | the null hypothesis. There is (Select an answer | evidence that d) Construct a 95% confidence for the difference in proportion of college graduates who do not have an opinion on this issue than that of non-college graduates. Calculate the standard error. (Round to three decimal places.) Calculate the margin of error. (Round to three decimal places.) Calculate the lower bound. (Round to three decimal places.) Calculate the upper bound. (Round to three decimal places.) Write an appropriate conclusion for this confidence intervat.