STA 3033 Midterm: STA3033 Exam 2 Review
Document Summary
Real-valued function whose domain is a sample space. Typically denoted as uppercase (x,y,) numerical values that a random variable can assume are lower case (x,y,). Electrical circuit has two relays operating in parallel, operating independently. Probability of switch closing properly is 0. 8 for each relay. Ei denotes the event that relay i closes properly when the switch is thrown. Xi= the number of relays that close properly when the switch is thrown. X = 0, means neither relay closes when the relays operate independently: 1 e2 = p 1 * p 2 = 0 (x. 1 2 e1 2 = p 1 * p 2 + p 1 * p 2. = 2 = p 1 e2 = p 1. = 1 + p (e ) (e ) A random variable x is said to be discrete if it can take on only finite number, or a countably infinite number, of possible values x.
