(02.01 LC)  An online article about an opinion poll says tha…

(02.01 LC)  An online article about an opinion poll says that “41% of Americans own a gun.” The poll is based on online survey interviews with 2,700 adults randomly chosen from a numbered list of 750,000 responses from around the United States, excluding New England states. Part A: What is the population and sample in this poll? (3 points) Part B: What type of sampling is used? (3 points) Part C: Are there any sources of bias present? Explain. (4 points) (10 points)

(02.02 HC)  A study showed that treatment with chamomile oil…

(02.02 HC)  A study showed that treatment with chamomile oil reduces pain levels in patients with Lyme disease. Each session in the study, chamomile oil was inserted in the body at the pain site indicated by the patient. Pain reduction was measured by self-reporting after each session. Another study is being designed to examine whether chamomile oil therapy also reduces pain in patients suffering from pinched nerves in the cervical region of the spine. Four hundred female patients are subjects in the new study.Part A: What is an appropriate design for the new study? Include treatments used, method of treatment assignment, and variables that should be measured. (4 points)Part B: If the study consisted of 200 male and 200 female patients instead of 400 female patients, would you change the study design? If so, how would you modify your design ? If not, why not? (4 points)Part C: Could your design be double-blind? Explain. (2 points) (10 points)

(03.02 MC) Josh believes the Spanish club students at his sc…

(03.02 MC) Josh believes the Spanish club students at his school have an unfair advantage in being assigned to the Spanish class they request. He asked 500 students at his school the following questions: “Are you in the Spanish club?” and “Did you get the Spanish class you requested?” The results are shown in the table below: Spanish Club Not in Spanish Club Total Received Spanish class requested 265 100 365 Did not get Spanish class requested 70 65 135 Total 335 165 500 Help Josh determine if all students at his school have an equal opportunity to get the Spanish class they requested. Show your work and explain your process for determining the fairness of the class assignment process. (10 points)

(02.05 MC)  A hospital gives a survey to all surgical patien…

(02.05 MC)  A hospital gives a survey to all surgical patients asking them to rate the quality of their hospital experience. One month after surgery, the hospital contacts the patients again to ask if there were any complications from the surgery. Last year, the results of the surveys showed that of the patients who had a poor hospital experience, 90% had post-surgical complications. What conclusion can be drawn from this study? (5 points)

(01.02 LC)  Suppose the following data set represents the st…

(01.02 LC)  Suppose the following data set represents the starting salaries for the population of teachers from seven states:$41,027$35,901$31,159$33,664$35,166$39,338$32,691 Part A: Calculate the mean of the data set. (3 points) Part B: Calculate the five-number summary. (3 points) Part C: Calculate the standard deviation of this data set. (4 points) (10 points)