Hello Tutor, My Name is Nathan and I am doing some volunteer studying on a review guide before my exam this Friday. Can you help me solve these couple questions, I don't understand them. Thanks -Nathan

Question 7 (1 point) A new drug to treat high cholesterol is being tested by pharmaceutical company, The cholesterol levels for $2 patients were recorded before administering the drug and after The average difference in cholesterol levels (after - before) was 2.36 me/du With a standard deviation of 6.201 mg du. Using this information. the calculated 8976 confidence paired t interval is ( 0.636. 5.386). Which of the following is the best Interpretation of this interval?! the proportion of all patients that had a difference in cholesterol levels between those on the drug and those who are not is ?954 We are certain the average difference in cholesterol levels between those who would take the drug and those who would not is between -0.636 and 5.356 IWe are 95%% confident that the average difference in the cholesterol levels of the patients sampled is between 0.636 and 5.356, We are 99% confident that the average difference in cholesterol levels between those who would take the drug and those who would not is between 0.636 and 5.356. We are ?9% confident that the difference between the average cholesterol level for those on the drug and the average cholesterol level for those not on the drug is between 0.636 and 5.356. Question 8 (1 point The Student Recreation Center wanted to determine what sort of physical activity was preferred by students, in a survey of 84 students. 59 indicated that they preferred outdoor exercise over exercising in a sym. When estimating the proportion of all students at the university who prefer outdoor exercise with 90 % confidence. what is the margin of errors ( 1 0.0499 2 0.9041 3 0.0089 ( 4 0.0818 () 5) 0.0639 Question 9 (1 point) According to a survey of 667 small business participants hesen at random in the Constant Contact Small Biz Council in May or 2013, 400 ot] harder to run a small b the respondents sa is ow than it was 5 When estimating the population proport what is the S confidence proportion of businesses who believe it is han fun a business now than 5 years () 1) (0 55357 0.64383 2) (0 55083 0.64857 D 3 (0 52073 0.61867 4 (6.35143 0.44917 5 ( 0.55083 . 0.64857