Put your answer in the blank (no explanation is required). 1) Consider the sample space S...
Put your answer in the blank (no explanation is required). 1) Consider the sample space S (1,2,3,4,5,6,7,8,9,10), A is the set of all odd numbers, B is the set of all even numbers, C is the set of numbers less than 5, D is (7.8) then BUDAn(CUD) Put 3 balls into 4 boxes at random. The probability of that there is at most one ball in each box is 2) 0.6, PA)-0.54, Suppose A and B are two independent random...
Lucky Number Question 1. (30 points) Short answer. ID No. Put your answer in the blank (no explanation is required) 1) Consider the sample space Ss(1,2,3,456,7B9,10). A is the set of all odd numbers, B is the set of all even numbers, C is the set of numbers less than S, D is (7,8) then BUDAn (CUD)- Put 3 balls into 4 boxes at random. The probability of that there is at most one ball in each box is al...
4) Suppose a random variable X has theprobability distribution with a: o 1 -2 0 1 2 0.3 0.1 p 0.4 . then p - ,P(X2 22) = ,, and E(X) = - 5) Suppose X~Bin(10,0.4), Y-2X+5, then E(Y) = ,Var(Y) 6) Suppose X-NC-3,4) and Y~N(2,9), X and Y are independent, then Var(X-2Y)
ppolt & Taluom Variable has edf. F(x), then the probability that X lies in the interval [a, b) is Question 2. 30 pt.) Single-choice questions 1) Suppose A and B are independent events, then)is incorrect. P(AIB) = P(A) B P(AB)- P(A) D PCA u B) = P(A) + P(B) e P(A B)-P(A)P(B) 2) Suppose X-Bin(10,0.3) and Y-Bin(15,0.3), they are independent, thenis incorrect. oX+Y-Bin(25,0.3) GX+Y-N(7.5,5.25) D VarX)VarCr) 3) Suppose X N(0,1) and YN(2,4), they are independent, then is incorrecet X +...
1- True or false section Write down the question AND the answer in your answer booklet) a. The expected value of a product of two independent random variables is E(XY) EQEY ipt b. A continuous random variable is a random variable that can assume only countable values cThe slope of CDF of any RV could not have negative values. d The expectation fa randomvariable uniformiydistributedover (-2,8)s equalto5__ It e If a and b are constants and X is a random...
1. The proportion of defective items in a large lot is p. Suppose a random sample of n items is selected from the lot. Let X denote the mumber of defective itens in the sample and let denote the number of non-defective items. (a) Specify the distributions of X and Y, respectively. Are they independent? (b) Find E(X-Y) and var(X Y). 1. The proportion of defective items in a large lot is p. Suppose a random sample of n items...
With explanation please. True or false section (W rite down the question AND the auswer in your ansver booklet: . A continuous random variable is a raudom variable that can assume only countable ( X values b. A basket contains 5 red balls and 8 black balls. The probability of drawing two successive red balls iithout repfacement) is equal to 25 c. The CDE of a discrete random variables could contain delta lun d. Th ctions ree unbiased coins are...
3) Suppose X,,X,,X, (n > 1) is a random sample from Bernoulli distribution with Circle out your Class: Mon&Wed or Mon.Evening p.mf. p(x)=p"(I-p)'-x , x = 0,1, , thenyi follows ( ). Binomial distribution B(a.p) eNormal distribution N(p,mp(- O Poisson distribution P(np) Dcan not be determined. 4) Suppose X-N(0,1) and Y~N(24), they are independent, then )is incorrect. X+Y N(2, 5) C X-Y-NC-2,5) BP(Y <2)>0.5 D Var(X) < Var(Y) x,X,, ,X, (n>1) is a random sample from N(μσ2), let-1ΣΧί 5) Suppose...
Please answer both. . Suppose that Y is a random variable with distribution function below. 1-e-v/2, 0, y > 0; otherwise F(y) = (a) Find the probability density function (pdf) f(y) of Y. yso (b) E(Y) and Var(Y) 5. Suppose X is a random variable with E(X) 5 and Var(X)-2. What is E(X)?
Conceptual: Circle the best answer(s) as indicated, or (1 Point) The distribution shown in Figure 1 depicts a distribution that is: 1. Skewed Left Not Skewed Skewed Right Normal None of the above 04 06 08 10 Figure 1 2. ( Point) You decided to play the lottery. This lottery is conducted by selecting 6 numbered balls at random, without replacement, from a population of 40 numbered balls. You win if 5 or more of the numbers you picked match...