A 70 – year old woman responds to an advertisement for cardi…

A 70 – year old woman responds to an advertisement for cardiovascular screening, which includes an ABI, an EKG, an ultrasound for AAA, and a carotid duplex ultrasound. She is told that she has a stenosis in here left carotid artery of 50 – 70% and no significant stenosis in the right carotid bulb. What should your recommendation to her be?

5 students were selected as a sample from a large population…

5 students were selected as a sample from a large population. Each student was asked how many times they had emailed their instructor during the semester, and their responses are below:  3, 8, 9, 13, 17   The mean for this sample is 10. Determine the point estimate for the population standard deviation. (Use 3 decimals in your answer.) [a] Retype your answer. [b]

A 76-year-old female with HTN, history of tobacco use, and p…

A 76-year-old female with HTN, history of tobacco use, and peripheral vascular disease presents to her primary care physician complaining of intermittent epigastric abdominal pain and nausea. She states that her symptoms started 4 months ago and have been increasing in severity. The abdominal pain is dull and “gnawing,” starts approximately 30 min after meals, and lasts 2–4 h. The pain is sometimes accompanied by nausea. She denies vomiting, diarrhea, hematochezia, and melena. She has gotten to the point that she fears eating and has lost 18 lbs. since her symptoms began. She has no significant past surgical history except right carotid endarterectomy. Abdominal examination is unremarkable. Routine laboratory studies are normal except for hypoalbuminemia. Gallbladder ultrasound, EGD, and colonoscopy are normal. All of the following are true regarding the most likely diagnosis EXCEPT:

A 35 – year old woman comes to the office because of an ulce…

A 35 – year old woman comes to the office because of an ulcer on the skin of her left ankle. She developed pigmentation in her left medial ankle several years ago and then developed a superficial, painless ulcer in the center of the pigmented area 2 months ago. She had been in excellent health prior to that. She works as a schoolteacher and is on her feet most of the day. She has been unable to heal it with local wound care and comes to see you for treatment. Which of the following diagnostic tests would be the most useful? 

During a typical May in St. Louis, it rains once every 2.6 d…

During a typical May in St. Louis, it rains once every 2.6 days. Using the exponential distribution, calculate the probability that no rain ralls during the first week (7 days) in the month of May. (Hint: You can also think of this as the probability that the first rainy day happens after a week.)   You may any of use these values, if you think it would be helpful: