stud81

Most popular questions and responses by stud81
  1. Probability

    Determine whether each of the following statements about events A,B,C is always true or not. 1. Suppose that A,B and C are independent events; then A^c (A complement) and B U C^c are independent. (T/F) 2. From now on, we do not assume that A,B,C are

    asked on October 3, 2018
  2. Probability

    Bob has two coins, A and B, in front of him. The probability of Heads at each toss is p=0.5 for coin A and q=0.9 for coin B. Bob chooses one of the two coins at random (both choices are equally likely). He then continues with 5 tosses of the chosen coin;

    asked on October 3, 2018
  3. Probability

    Let A,B,C be three events, and let X=IA, Y=IB, and Z=IC be the associated indicator random variables. We already know that X⋅Y is the indicator random variable of the event A∩B. In the same spirit, give an algebraic expression, involving X,Yand Z, for

    asked on October 3, 2018
  4. Probability

    Bob has two coins, A and B, in front of him. The probability of Heads at each toss is p=0.5 for coin A and q=0.9 for coin B. Bob chooses one of the two coins at random (both choices are equally likely). He then continues with 5 tosses of the chosen coin;

    asked on October 3, 2018
  5. Probability

    Let X,Y,Z be independent discrete random variables with E[X]=2, E[Y]=0, E[Z]=0, E[X^2]=20 E[Y^2]= E[Z^2]=16, and Var(X)=Var(Y)=Var(Z)=16. Let A=X(Y+Z) and B=XY. 1. Find E[B]. E[B]= ? 2. Find Var(B). Var(B)= ? 3. Find E[AB]. E[AB]= ?

    asked on October 3, 2018
  6. probability

    A set of 60 different days is selected from a given year. assume that all sets of cardinality 60 are equally likely. Also, for simplicity, assume that the year has only 360 days, divided into twelve 30 day months evaluate the probability of the following

    asked on October 3, 2018
  7. Probability

    Consider a group of n≥4 people, numbered from 1 to n. For each pair (i,j) with i≠j, person i and person j are friends, with probability p. Friendships are independent for different pairs. These n people are seated around a round table. For convenience,

    asked on October 3, 2018
  8. Probability

    With A,B,X defined as before, determine whether the following statements are true or false: 1. A and B are independent. (T/F) 2. A and B are conditionally independent, given X=0. (T/F) 3. A and B are conditionally independent, given X=1. (T/F)

    asked on October 3, 2018
  1. probablity

    1. 0 2. 320 3. 0 E[A*B] = E[A] * E[B] = E[X(Y+Z)] * E[X*Y] = (E[X*Y + Y*Z]) * E[X]*E[Y] = (E[X]*E[Y] + E[Y]*E[Z]) * E[X]*E[Y] since E[X]=2,E[Y]=0 = ((2 * 0) + (0 * 0) ) * 2*0 since E[Y]=0,E[Z]=0 E[AB] = 0

    posted on October 7, 2018
  2. Probability

    1. The event Ac∩B∩C. Answer: (1-x)*y*z --Divine you right 2. At most two of the events A,B,C occurred. Answer: 1-(X*Y*Z) Please share answers to other questions as well.

    posted on October 7, 2018
  3. Probability

    Hi Anonymous, Can you share answers to any of the other questions ....?

    posted on October 7, 2018
  4. Probability

    I have posted 7 Probability questions and i am willing to pay $ for the solution.

    posted on October 6, 2018
  5. Probability

    I have posted 7 Probability questions and i am willing to pay $ for the solution.

    posted on October 6, 2018
  6. Probability

    I have posted 7 Probability questions and i am willing to pay $ for the solution.

    posted on October 6, 2018
  7. Probability

    I have posted 7 Probability questions and i am willing to pay $ for the solution.

    posted on October 6, 2018
  8. Probability

    I have posted 7 Probability questions and i am willing to pay $ for the solution.

    posted on October 6, 2018
  9. Probability

    I have posted 7 Probability questions and i am willing to pay $ for the solution.

    posted on October 6, 2018