6 (14 pts). A survey wants to know whether people in a city…

6 (14 pts). A survey wants to know whether people in a city with ages 16-19 years old spend less than 2 hours on TV daily. A sample of 600 people with the ages 16-19 show the sample mean x– = 1.9 hours. Suppose the population standard deviation σ = 0.3 hour. (a) What is the population? What is the sample? (b) At α = 0.01 level of significance, determine whether there is evidence that that the population mean is less than 2 hours. (c) Identify the type of error for your conclusion. Find the probability of error and probability of confidence if it is type I error.

Your next patient is complaining of pain in his left calf mu…

Your next patient is complaining of pain in his left calf muscle every time he gets to the third hole at the gold course.  As you scan your patient’s proximal superficial femoral artery you get PSVs of 52cm/s.  Just distal to that you find flows of 258 cm/s.  What would your preliminary report include?

You are the RT working in the emergency department in a rura…

You are the RT working in the emergency department in a rural hospital (at sea level). A healthy 60-year-old woman was brought to the emergency department in a comatose state, breathing very shallowly. Her family stated that she had taken an overdose of sleeping pills. Arterial blood gases, were obtained while she was breathing room air, revealed a PaO2 of 55 mm Hg, a PaCO2 of 70 mm Hg, and pH of 7.15.  The physician has asked you to calculate the PA02, choose the closest result to your findings below. 

Your carotid duplex study documents an occluded right ICA on…

Your carotid duplex study documents an occluded right ICA on a 72 y.o. female.  The left ICA has a 50-69% diameter reduction based on flow velocities.  What is the most likely explanation for the antegrade flow detected in the right anterior cerebral artery (ACA) with TCD?