math,correction

Find expected value for the random variable.
its suppost to be a table 6 X 2 i used the .... to represent separation

z.....3......6.....9.....12.......15
p(z)..0.14..0.29..0.36..0.11...0.10

So what i did is i said

e(x) = 3 (0.14)+ 6(0.29)+ etc to all the rest. and my result was 8.22 am i correct that would be the expected value for the reandom variable.

  1. 👍 0
  2. 👎 0
  3. 👁 209

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    During the first year at a university that uses a four-point grading system, a freshman took ten three-credit courses and received two As, three Bs, four Cs, and one D. a) Compute this student's g.p.a. What I did : 2+3+4+1/4=2.5

    asked by lijm on November 1, 2019
  2. Elementary statistics

    Nine apples, four of which are rotten, are in a refrigerator. Three apples are randomly selected without replacement. Let the random variable x represent the number chosen that are rotten. Construct a table describing the

    asked by Rose Bud on February 29, 2012
  3. Stats-Probability

    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

    asked by Johnny on July 13, 2006
  4. Probability

    The joint PMF, pX,Y(x,y), of the random variables X and Y is given by the following table: (see: the science of uncertainty) 1. Find the value of the constant c. c = 0.03571428571428571428 2. Find pX(1). pX(1)= 1/2 3. Consider the

    asked by RVE on February 25, 2015
  5. math

    Five males with a particular genetic disorder have one child each. The random variable x is the number of children among the five who inherit the genetic disorder. Determine whether the table describes a probability distribution.

    asked by Mary on July 23, 2019
  1. probability

    A fair coin is flipped independently until the first Heads is observed. Let K be the number of Tails observed before the first Heads (note that K is a random variable). For k=0,1,2,…,K, let Xk be a continuous random variable

    asked by JuanPro on March 28, 2014
  2. probability

    Determine whether each of the following statement is true (i.e., always true) or false (i.e., not always true). 1. Let X be a random variable that takes values between 0 and c only, for some c≥0, so that P(0≤X≤c)=1. Then,

    asked by RVE on February 28, 2015
  3. probability

    1) Let X and Y be independent continuous random variables that are uniformly distributed on (0,1) . Let H=(X+2)Y . Find the probability P(lnH≥z) where z is a given number that satisfies e^z

    asked by anonymous1 on August 5, 2019
  4. math

    I only need someone to check my answers. Find the expected value of a random variable X having the following probability distribution: x -15 -1 0 1 5 8 p (x=x) .12 .16 .28 .22 .12 .10 E(X) = (-5) * (.12) + (-1) *(.16) + (0) *

    asked by lijm on November 1, 2019
  5. stats

    Consider an infinite population with 25% of the elements having the value 1, 25% the value 2, 25% the value 3, and 25% the value 4. If X is the value of a randomly selected item, then X is a discrete random variable whose possible

    asked by Mischa on November 5, 2008

More Similar Questions