Math425midf8

# Math425midf8 - Math 425(Fall ’08 Midterm 1 October 2 2008 1(10 pts A committee of 7 consisting of 2 Republicans 2 Democrats and 3 Independents is

This preview shows pages 1–4. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Math 425 (Fall ’08) Midterm 1 October 2, 2008 1 (10 pts) A committee of 7, consisting of 2 Republicans, 2 Democrats, and 3 Independents, is to be chosen from a group of 5 Republicans, 6 Democrats, and 4 Independents. How many committees are possible? 2 (10 pts) A forest contains 20 elk, of which 7 are captured, tagged, and then released. A certain time later 5 of the 20 elk are captured. What is the probability that 2 of these 5 have been tagged? 2 3 (20 pts) Each of 2 balls is painted either black or gold and the place in an urn. Suppose that each ball is colored black with probability 1 2 , and that these events are independent. a) Suppose that you obtain information that the gold paint has been used (and thus at least one of the balls is painted gold). Compute the conditional probability that both balls are painted gold. b) Suppose, now, that the urn tips over and 1 ball falls out. It is painted gold. What is the conditional probability that both balls are gold in this case?...
View Full Document

## This note was uploaded on 04/24/2010 for the course MATH 425 taught by Professor K during the Spring '10 term at University of Michigan-Dearborn.

### Page1 / 7

Math425midf8 - Math 425(Fall ’08 Midterm 1 October 2 2008 1(10 pts A committee of 7 consisting of 2 Republicans 2 Democrats and 3 Independents is

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online