Question 10 (4 points) Past observations suggest that patients who underwent carotid endarterectomy (an operation that removes blockage from the inside of a carotid artery to restore blood flow to the brain) take about 3 to 4 weeks before they can resume their usual daily routine (Source: Average carotid artery surgery recoven/ time. (2019, November 20). Retrieved from http://brvsc.com/a verage-cara tid-artery-surgeryrecovery-time. Assuming that the recovery time follows a normal distribution with an average of 3.5 weeks and a standard deviation of 0.82 weeks, what is the probability that a random patient who was subjected to this medical procedure will take a month (4 weeks) or more to recover from the surgery? 0 A) 0.6098 0 B) 0.2709 0 C) 0.3902 0 D) 0.2800 0 E) 0.7291 Question 12 (4 points) In 2017, an increase in the cases of Carbon Monoxide poisoning was observed after Hurricane Irma made landfall in Florida. The number of cases per county in the state of Florida was gathered, and it was found that the average number of cases of carbon monoxide poisoning in a county is 8.55, with a standard deviation of 17.23 (Source: http://www.floridahealth.gov/diseases-and-conditions/disease-reporting-and-management/disease- O reporting-and-surveillance/data-and-publications/_documents/2017-amr-appendices.pdf). Suppose the that mean number of carbon monoxide poisoning in a county follows a O normal distribution. The number of cases of Carbon Monoxide poisoning in a county in Florida that corresponds to the 90th percentile is O A) 30.60 O B) 24.21 O C) -13.50 OD) 28.17 O E) 22.61Question 11 (4 points) Celiac disease is an autoimmune disorder caused by intolerance to gluten. A biomedical scientist and dietician decide to study the effect of a specific gluten free diet with antibody levels in patients with the disease. The researchers randomly recruit 30 newly-diagnosed patients with the disease and assign them to one of two groups. Neither the researchers nor the participant know to which group the participant was assigned. The treatment group is given a specific gluten free diet to follow and advice from a dietician in avoiding gluten in common foods. The control group also meets with the dietician but is given general general advice on eating healthy balanced meals but with no information on avoiding gluten in common foods. Participants are told to write down everything they eat for a month and are asked to report back. For each participant initial and final antibody levels are measured. What type of study is this? 0 A) Invalid Observational study 0 B) Retrospective study 0 C) Valid Observational study 0 D) Prospective study 0 E) Randomized controlled experiment