Texts: Question 7
0.08 pts
Suppose a researcher counted how many individuals signed into the Emergency Room at Brigham's Hospital per day. For the 10 days under observation, the number of individuals signing into the Emergency Room were 4, 2, 1.47, 210, 8.7, and 15. Assuming the count follows a Poisson distribution, give a numerical estimate for mu, the average number of visits per day. Calculate the number to 3 decimal places.
Question 8
0.08 pts
Given the data in the previous problem following the Poisson distribution, what should the standard deviation of these measurements be? Calculate the number to 3 decimal places.
Question 9
0.08 pts
Suppose you summarized the distribution of counts for the Emergency Room using techniques learned in Introduction to Biostatistics. So, you used the standard formula to calculate the sample standard deviation. What did you calculate the sample standard deviation to be? (to 3 decimal places) (On the midterm, I might ask you to compare this estimate with the one from the previous question and discuss whether the observations in fact follow a Poisson distribution!)