This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: for x = 1, 2, 3, 4, 5 = 0 otherwise a) Determine the mean and standard deviation for the days of hospitalization for this illness. b) Determine the value of the cumulative distribution function for X= 3 days. c) Find the expected value of Y = 2X 2 +3X -5 2) Let probability density function of X be given by, f (x) = cx(2-x) for 0 < x < 2, = 0 otherwise a) What is the value of c? b) Compute P(X < 1.5). 3) A box of widgets contains four good ones and one defective. To locate the defective widget, one widget at a time is drawn at random from the box (and not replaced) and then tested. Let X denote the number of tests required to locate the defective widget. a) Determine the probability mass function of X. b) Find the expected value for X....
View Full Document
This note was uploaded on 10/27/2009 for the course ME 3 taught by Professor Chavez during the Spring '09 term at Stevens.
- Spring '09