APMA 3120 Chapter Notes - Chapter 8: Random Variable, Countable Set, Simple Random Sample

• School: University of Virginia
• Department: Applied Mathematics
• Course: APMA 3120
• Professor: James Lark

Document Summary

Chapter 8: random variables: a random variable (r. v. ) is one whose values are quantitative outcomes of a random phenomenon. There is a ixed number n of observations: 2. Each of the n observations is independent of the others: 3. There are two possible categories, success and failure , for each observation: 4. These are given for any z between -3. 49 and +3. 49, with a few extreme cases beyond these values to specify exactly how unlikely such values are. But we often simply state p(z < z ) is approximately zero for any z less than -3. 5, which means. P(z > z ) is approximately one for z less than -3. 5. Similarly, p(z < z ) is approximately one for any z greater than +3. 5, which means p(z > z ) is approximately zero for z greater than +3. 5.