Could you check my work. If any of them are wrong could you provide an explanation. (FYI I was not here during the lectures last week so I was not sure how to do these)

Question 16 3 pts The college's performing arts center wanted to investigate why ticket sales for the upcoming season signicantly decreased from last year's sales. The marketing staff collected data from a survey of community residents. Out of the 110 people surveyed, only 7 received the concert brochure in the mail. Which of the following is a reason that the marketing staff should not calculate a condence interval for the proportion of all community residents who received the concert brochure by mail? Check all that apply. The sample needs to be random, but we don't know if it is. The actual count of community residents who received the concert brochure by mail is too small. C] The actual count of students who community residents who didn't receive the concert brochure by mail is too small. nlp-hat) is not greater than 10. [j n(1 minus p-hat) is not greater than 10. rD Question 15 1 pts ' In a Washington Post! Kaiser Family Foundation Poll conducted from January through March 2015, 20% of women (ages 17-26) who attended college during the past 4 years say they were sexually assaulted. The poll surveyed 514 randomly selected females. What is the 90% condence interval for the proportion of women (ages 17-26) who attended college during the past 4 years and say they were sexually assaulted? *remember that your answer should be in parentheses (0.171. 0.229) D Question 14 1 pts In a CNN article, 7% of college graduates say they don't plan on ever being able to entirely repay their student loans. Financial aid office staff at a private university conducted a study to determine whether the proportion at their university is higher. They surveyed 500 randomly selected recent college graduates and determined that 12% of them don't plan on ever being able to entirely repay their student loans. Which of the following are the appropriate null and alternative hypotheses for this research question? O Ho: p = 0.07 Ha: p * 0.07 Ho: p = 0.07 Ha: p > 0.07 O Ho: p = 0.12 Ha: p * 0.12 O Ho: p = 0.12 Ha: p > 0.12Question 13 1 pts In an ABC News/Washington Post Poll in January 2015, 1,003 adults nationwide answered the following question, "Obama has proposed providing free tuition to attend community colleges at a cost to the federal government of sixty billion dollars over 10 years. Do you support or oppose this proposal?\" 53% supported the proposal with a margin of error of 3.5% at a 95% level of condence. http://www.washingtonpost.com/politics/polling/washington-postabc-news- poll-january-12 15/ 2015/01/ 22/ 9eba07b0-9f19-11e4-9 1fc- 7dff95a14458_page.html Which of the following statements is correct about the 95% condence interval? 0 We are 95% condent that between 46% and 60% of all adults nationwide will support the free community college tuition proposal. We are 95% condent that between 49.5% and 56.5% of all adults nationwide will support the free community college tuition proposal. 0 We are 95% condent that 53% of the 1,003 adults in the sample will support the free community college tuition proposal. 0 We are condent that 95% of the 1,003 adults in the sample will support the free community college tuition proposal. Question 12 Which of the following reasons best explains the variability we see in the proportion of orange M&M's in the bags? 0 Poor quality control in the production process 0 Human error in calculating the proportion of orange M&M's in a bag 0 An error in the simulation (9 The random selection of samples Question 11 1 pts The M&M's web site says that 20% of milk chocolate M&M's are orange. Let's assume this is true and set up a simulation to mimic buying 200 small bags of milk chocolate M&M's. Each bag contains 55 candies. We made this dotplot of the results. 0.0 0.1 02 I13 I14 0.5 Proporthnjirmoe In the dotplot. what does a dot represent? 0 one M&M candy one small bag of M&M candies O 200 small bags of M&M candies O the number of orange candies