maths probability

Most popular questions
1. Maths Probability

A box contains 4 pears and 7 Oranges. Three fruited are taken out at random and eaten. Find the probability that (1) 2 pears and 1 orange are eaten (2) The third fruit is eaten is an orange (3) The first fruit eaten was a pears. Given that the third fruit

asked by Farhan on January 28, 2017
2. Maths Probability

Let X and Y be independent random variables, each uniformly distributed on the interval [0,2]. Find the mean and variance of XY. E[XY]= 1   var[XY]= ??? Find the probability that XY≥1. Enter a numerical answer. P(XY≥1)= ???

asked by Anonymous on May 14, 2014
3. maths probability

a spinner is marked green yellow red and blue. neel conducted an experiment spinning the spinner several times

asked by a on December 10, 2016
4. maths probability

In one version of the game Keno the house has a pot containing 80 balls numbered 1 through 80,.the house then selects 20 of the 80 numbers at random . The house randomly selects 20 numbers from the counting numbers 1-80 .In the variation called 6-spot

5. Maths Probability

Consider a Markov chain X0,X1,X2,… described by the transition probability graph shown below. The chain starts at state 1; that is, X0=1. Find the probability that X2=3. P(X2=3)= - unanswered Find the probability that the process is in state 3

asked by Anonymous on May 15, 2014
6. Maths Probability

A dedicated professor has been holding infinitely long office hours. Undergraduate students arrive according to a Poisson process at a rate of λu=3 per hour, while graduate students arrive according to a second, independent Poisson process at a rate of

asked by Anonymous on May 15, 2014
7. Maths Probability

Uncle Henry has been having trouble keeping his weight constant. In fact, during each week, his weight changes from the beginning of the week to the end of the week by a random amount, uniformly distributed between -0.5 and 0.5 pounds. Assuming that his

asked by Anonymous on May 14, 2014
8. Maths Probability

Let θ be an unknown constant. Let W1,…,Wn be independent exponential random variables each with parameter 1. Let Xi=θ+Wi. What is the maximum likelihood estimate of θ based on a single observation X1=x1? Enter your answer in terms of x1 (enter as

asked by xyz on May 20, 2014
9. Maths Probability

Consider a Markov chain X0,X1,X2,É described by the transition probability graph shown below. The chain starts at state 1; that is, X0=1. 1recurs p=.75 1to 2 p= .25 2to 1 p = .375 2 recurs p=.25 2 to 3 p = .375 3 to 2 p = .25 3 recurs p = .75 Find the

asked by xyz on May 20, 2014
10. Maths Probability

Suppose that you move to a new house and you are 10% sure that your new house's phone number is 561290. To verify this, you use the house's phone to dial 561290, obtain a busy signal, and conclude that this is indeed your phone number. (Suppose that you

asked by Anonymous on May 14, 2014
11. maths probability

The lifetime X of a bulb is a random variable with the probability density function: f(x)=6[0.25-(x-1.5)^2] when 1

asked by rupesh painkra on January 27, 2014
12. maths probability

a box contains 20 red,30 black,40 blue,50 white. what will be the minimum number of balls to be drawn without replacement so that you are certain about getting 4 red,5 black,6 blue,7 white balls? A.140 B.97 C.104 D.124

asked by my era on June 27, 2014
13. Maths probability

You get to throw a die. If you roll a 3, you win \$6. If you roll a 1 or a 5, you win \$3. If you roll an even number, you lose \$6. Find your expectation for this game.

asked by louis on April 15, 2008
14. Maths probability

Numbers is a game where you bet \$1.00 on any three-digit number from 000 to 999. If your number comes up, you get \$750.00. Find the expected winnings.

asked by louis on April 15, 2008
15. Maths probability

Records show that 8% of blood samples tested for a certain condition test positive. Assuming that whether or not a blood sample tests positive is independent of whether or not any other blood sample tests positive, calculate by hand the following

asked by Tanisha on January 16, 2017
16. maths probability

Consider an experiment with four possible outcomes which we denote by Wi for i = 1,2,3,4. Sample space is Omega = {w1,w2,w3,w4}. Consider events A= {w1}, B = {w1,w2}, C = {w1,w2,w3} and D = {w2,w4}. Given that P(A) = 1/10, P(B) = 1/2, P(C) = 7/10, compute

asked by Jessica on November 28, 2013
17. Maths Probability

When writing a math expression, any time there is an open bracket "(", it is eventually followed by a closed bracket ")". When we have a complicated expression, there may be several brackets nested amongst each other, such as in the expression

asked by stranger on March 25, 2013
18. Maths probability

An insurance company classifies its customers into three groups,a,b and c. Groups a accounts for 20% of the total custermers, groupe b accounts 40%, and accounts for 40%. For people in groupe a,b and c, the probabilities of having an accident in one year

asked by Nithiya on November 3, 2012