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Question 8 Background : Name That Scenario: Research Problems Below are a number of research problems. For each, first think about if the appropriate method to address the research problem would be to make a confidence interval (CI) or to conduct a test of hypotheses (HT). Then, if a confidence interval is the appropriate method, complete the following statement by providing the symbol for the corresponding parameter and give a complete definition for that paramenter in context. Make a confidence interval for the parameter where the parameter represents OR If a test of hypotheses is the appropriate method, complete the following by providing the appropriate null and alternative hypotheses to be tested and a complete definition of the parameter(s). Test the hypotheses Ho: versus Ha: where the parameter(s) represent(s)Question 8 Subquestions 8.a TBD A yoga instructor is working on a project in which some high school (HS) students participated in a yoga course during their last semester in HS. The points length of time (minutes) that a student could correctly hold a certain yoga pose was collected at the start of the course and then at the end. The instructor wanted to determine if their yoga skills for this pose improved on average (where improvement implies they could hold the correct pose longer and improvement was measured as Time at End less Time at Start.) No answer entered. Click above to enter an answer. 8.b TBD Researchers want to know what proportion of a certain type of tree growing in a national forest suffers from a disease. They take a representative points sample of 200 of the trees from around the forest, test them, and find that 15 of them have the disease. No answer entered. Click above to enter an answer. 8.c TBD Researcher Jessie is studying how the fear of going to the dentist affects the actual number of visits made to the dentist for adults. She asks a random points sample of adults whether or not they fear going to the dentist and also how many times they have gone in the past 10 years. She would like to assess if the average number of visits made by adults who fear going to the dentist is lower than the average number of visits for those who don't have that fear. No answer entered. Click above to enter an