diagnostic - Fall 2006 Statistics Diagnostic Mark Hansen...

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

View Full Document Right Arrow Icon
Fall Mark Hansen 2006 Transportation Engineering Statistics Diagnostic 1. Vehicles cross a cordon line of a rural highway at a uniform rate between the hours 9am and 10am. The crossing time of an individual vehicle is equally likely to have any value with this time range. The cordon crossing times of 25 randomly chosen vehicles crossing the cordon between these times are recorded and averaged. What is the probability that the average time obtained will be earlier than 9:24? 2. An airline is considering replacing a 30-seat jet with a 12-seat jet for a regular daily flight. With the 30-seat jet, the number of passengers carried is Poisson distributed with a mean of 9. If the 12-seat jet is used instead, what proportion of the time will it be full? What will be the expected number of “spilled passengers”—those lost because no seats are available on the day they want to fly? 3. Calculate the mean and variance, and qualitatively describe the skewness, of a random variable with the following CDF: 0 0.75 1 .7 1 -1
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/16/2011 for the course CIVIL ENGI 523 taught by Professor Xingyou during the Spring '10 term at Indian Institute of Technology, Roorkee.

Page1 / 2

diagnostic - Fall 2006 Statistics Diagnostic Mark Hansen...

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

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