MATH 2233 Lecture Notes - Lecture 12: Elche, Standard Deviation
5 Nov 2018
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Random variables come from random samples in a population . Discrete random variables are those you can list in a sequence . Example: hospital records show that for patients undergoing a certain surgical procedure, the length of stay in the hospital was 2 days for 10% of the patients, 4 days for 20% of the patients, 5 days for. 40% of the patients, and 6 days for 30% of the patients. Let x = the length of stay for a randomly selected patient. Probability distribution of is a table that shows the probability of picking a certain value: pcx - 4) or elx) or ) or vcx ) or or or or or. The best way to do this is use this table n pln ) Identical trials are performed where is determined prior to the esnperiment coin tossed. Independant dont outcomes trials so the affect another trial independant coin tosses. Probability for success is the same for each trial.
