(e) Other laboratory tests have also been considered for diagnosing COVID-19. The following ROC curves shows the diagnostic accuracy of 7 laboratory measures collected by Mardani et al. (2020). Based on the ROC curves, what conclusions can you make about the effectiveness of WBC (in red), LYM (in grey), and Albumin (in blue) for diagnosing COVID-19 and why?  (4 pts)

Team Situation Awareness (TSA) refers to:

Problem 4 (20 points): Patients brought into a trauma center are hooked up to sensors that display important parameters such as blood pressure, heart rate, and respiratory rate. These parameters must be constantly monitored because they can change rapidly. The location of one is circled in the picture (located on the wall at the head of the bed), and an example is shown below. During a trauma response, emergency doctors and nurses are arranged around the patient’s bed. The trauma team leader is stationed at the head of the bed. You are brought in as a human factors specialist to evaluate whether the trauma team leader is making use of these vital signs monitors.

(d) (6 pts) As part of your analysis you wish to use SAGAT to measure the team members’ situation awareness of the vitals monitor. For each level of SA, provide one example of a SAGAT query/question that could be used to test their situation awareness. If needed, state any assumptions you made about what the display shows.

(b) Quantify the degree of the Doctor sensitivity (d’) for each of the data sets. Provide the final answer here and upload photos of your scratch work in the submission dropbox after the exam. (6 pts) Doctor 1 d’:  Doctor 2 d’:  

How large must the sample be if you wish to be at least 80% confident that the error in estimating p is less than 0.03, regardless of the true value of p?  Answer should be an integer.

Hits to a high-volume Web site are assumed to follow a Poisson distribution with a mean of 10,000 per day. Find the probability of less than 9900 hits in a day.

Please take a picture of a paper or scan a paper (any paper, can be a blank one)  Then save it in your computer and upload that here. Don’t upload an existing file. I want to check whether Honorlock let you save a file in your computer and let you upload that.

A study was conducted in which all meals were provided for 15 lean boys for three days followed by one stress test. The average systolic blood pressure (SBP) during the test was 115.5 with a standard deviation of 9.7. Construct a 99% confidence interval for mean SBP.        For example your answer should be like 100 < p < 150

Suppose that you wanted the total width of the two-sided confidence interval on mean temperature to be 1.5 degrees Celsius at 99% confidence. σ = 0.5. What sample size should be used? Round up the answer to an integer.