EXAM 1 Questions Spring 2007 - bus has a probability of...

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

View Full Document Right Arrow Icon
EXAM 1   Name:  Jasen Shorter Start time:  April 9, 2007 2:38am Time allowed:  48 hours Number of questions:  5 Finish    Help   TO GET FULL CREDIT FOR A PROBLEM YOU MUST SHOW ALL THE WORK TO GET THE ANSWER. IF YOU  GIVE ME JUST THE ANSWER I WILL GIVE YOU ONLY 2 POINTS IF IT IS CORRECT AND 0 IF NOT.  Question 1    (6 points) A digital communication system transmits one of three values -1, 0 , 1. A channel adds noise to cause the decoder  to sometimes make an error. The error rates are 20% if a -1 is transmitted, 50% if a 0 is transmitted, and 30% if a 1  is transmitted. If the probabilities for the various symbols being transmitted are P[-1] = .2 P[1] = .3 and P[0] = .5,  find the probability of error.  Equation:   Equation editor   Save answer Bottom of Form Question 2    (6 points) A new bus runs on Sunday, Tuesday, Thursday, and Saturday while an older bus runs on the other days. The new 
Image of page 1

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

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

Unformatted text preview: bus has a probability of being on time of 3/4 while the older bus has a probability of only 1/4. If a passenger chooses an arbitrary day of the week to ride the bus, what is the probability that the bus will be on time? Equation: Equation editor Save answer Bottom of Form Question 3 (6 points) How many committees with 3 females and 5 males can you make from a group of 7 males and 5 females? Equation: Equation editor Save answer Bottom of Form Question 4 (6 points) What happens to the following equation if A and B are not independent ? Equation: Equation editor Save answer Bottom of Form Question 5 (6 points) Determine the Probability that in a class of 32 students at least one will have the same birthday as you. Equation: Equation editor Save answer Bottom of Form Finish...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern