(c) Provide a 95% confidence interval for the difference between the two population means. (Usex - X Round your answers to two decimal places.) 6350 X to 3.3650 x Need Help? Read It Watch It Master It

please do 4-7 I already solved 1-3

rev nts the sample mean 1000 900 800 700 600 500 400 300 200 100 Flu Cases B C 0 G Can we say with 80 % certainty that city (had at least 650 cases of this virus among adults last month? Keypad Keyboard Shortcuts Yes. Because the sample mean is above 650, we can be 80% confident that city i had at least 650 cases of this virus among adults last month No. Although the sample mean for city i falls above 650, the confidence interval still contains 650. Therefore, we cannot conclude with 80 % confidence that city I had at least 650 cases of this virus among adults last month. Yes. Because the entire confidence interval is above 650, we can be 80% confident that city i had at least 650 cases of this virus among adults last month. No. Because the sample mean for city i does not equal 650, we cannot conclude with 80 % confidence that city I had at least 650 cases of this virus among adults last month.