A study was conducted in which all meals were provided for 1…

A study was conducted in which all meals were provided for 14 lean boys for three days followed by one stress test. The average systolic blood pressure (SBP) during the test was 118.3 with a standard deviation of 9.9. Construct a 99% confidence interval for mean SBP. Round your answer to 3 decimal places.  What distribution to be used? [C] lower interval  [A]  Upper interval [B]

The 2004 presidential election exit polls from the critical…

The 2004 presidential election exit polls from the critical state of Ohio provided the following results. The exit polls had 2020 respondents, 768 of whom were college graduates. Of the college graduates, 412 voted for George Bush. Calculate a 80% confidence interval for the proportion of college graduates in Ohio who voted for George Bush. Round your answer to 4 decimal places.  What distribution to be used? [C] lower interval  [A]  Upper interval [B]