Stats-Probability

posted by .

Would really urgently appreciate answers to these questions. Thanks.

3. Suppose that two lotteries each have n possible numbers and the same payoff.
In terms of expected gain, is it better to buy two tickets from one of the lotteries
or one from each?
4. A random square has a side length that is a uniform[0,1] random variable. Find
the expected area of the square.
5. If n men throw their hats into a pile and each man takes a hat at random, what
is the expected number of matches? (Hint: Express the number of matches as
a sum of n Bernoulli random variables.)


Well Johnny, we (at least I) don't simply respond to requests for answers. The objective here is not just "getting the answer", but seeing that you "get the method" behind it too.
What have you tried? Where are you stuck right now?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. finding numbers

    The sum of two positive numbers is 20. Find the numbers if the sum of their squares is as large as possible; as small as possible. What does it mean?
  2. Please Help - PROBABILITY

    At a fair run by a local charity organization, it costs 50 cents to try one's luck in drawing an ace from a deck of 52 playing cards. What is the expected profit per customer if they pay $4 if and only if a person draws an ace. I presume …
  3. Statistics

    "A batch of 350 raffle tickets contains three winning tickets. You buy five tickets. What is the probability that you have (a) no winning tickets, (b) all of the winning tickets, (c) at least one winning ticket, and (d) at least one …
  4. stats: need help please

    4.34 Keno is a favorite game in casinos, and similar games are popular with the states that operate lotteries. Balls numbered 1 to 80 are tumbled in a machine as the bets are placed, then 20 of the balls are chosen at random. Players …
  5. Math - Game Theory

    Suppose that a decision-maker's preferences can be represented by the expected value of a utility function u. Find another utility function u' whose expected value represents the decision-maker's preferences and assigns a payoff of …
  6. statistics

    At a church bazzar they have a game of chance that consists of picking a two digit number(0-9).You can bet 1$ by picking a two digit number if you match two numbers you win 25$ if you match one the numbers in the same order you win …
  7. combinatorics

    1. You have k slots (of the same size) to drop n tokens into. How many ways can you do this if the tokens are marked?
  8. math

    suppose a lottery game allows you to select a 2-digit number. Each digit may be either 1,2,3,4,5. if you pick the winning number you win $10 otherwise you win nothing A)what is the probability that you will pick the winning number …
  9. Probability

    A school is running a raffle for two prizes. 59 tickets were sold for the raffle, numbered 1,…,59. All the tickets are put into a hat and a teacher picks out two tickets which have numbers i and j from the hat. What is the expected …
  10. Counting and Probability

    Hi! I need urgent help for these questions here. They have a deadline for today and I have no idea how to solve them (a). Suppose we have a bag with 10 slips of paper in it. Eight of these have a 2 on them and the other two have a …

More Similar Questions