Identify the distribution and provide a symbolic answer or an Excel expression.
ID: 3340763 • Letter: I
Question
Identify the distribution and provide a symbolic answer or an Excel expression.
For quality assurance and control, the records of 30 patients are to be reviewed in depth. If those records are randomly selected from a pool of 52 records from St. Agnes' Hospital, 70 from Municipal General, and 38 from Northern State Regional, what is the probability that the records examined comprise 10 from from each hospital?
Extra credit: Why would selecting records at random from the pooled records from three hospitals be a bad idea for quality control?
Explanation / Answer
Probability = (52C10 * 70C10 * 38C10)/160C30
= 0.0108