{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

HW3 - Problem Set 3 Due Thursday Econ 319 Introduction to...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

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

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

Unformatted text preview: Problem Set 3- Due Thursday 10/23/08 Econ 319 - Introduction to Probability and Statistics Fall 2008 Cornell University Prof. Molinari 1. The waiting time, in hours, between successive speeders spotted by a radar unit is a continuous random variable, X; with cumulative distribution function F ( x ) = 8 < : for x & & 1 ¡ e & 3 & ¡ x ¡ for x > ; Compute V ar ( X ) : 2. Consider two independent random variables X and Y with joint probability density function f ( x;y ) = 1 2 & e & 1 2 ( x 2 + y 2 ) : Compute Cov ( X;Y ) : 3. Suppose that the probability of a young person &nding the ¡perfect date¢in a one day internet search on a chat room is : 4 . Suppose that 20 people attempt independent ¡perfect date¢ searches over the internet on a particular day. (a) What is the probability that all of them &nd the ¡perfect date¢? (b) What is the probability that between 3 and 7 of them &nd the ¡perfect date¢?...
View Full Document

{[ snackBarMessage ]}

Page1 / 3

HW3 - Problem Set 3 Due Thursday Econ 319 Introduction to...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon bookmark
Ask a homework question - tutors are online