Let X be a discrete random variable with P(X = -1) = .3, P(X = 1) = .45, P(X = 2) = .15 and P(X = 6) = .1. Find E(X)

Q: A report on Americans opinions about long-term investments included data from a poll of 1,065…

A: Given information:   Relative Frequency for Women Relative Frequency for Men Real Estate 0.32…

Q: ignment Saved to this PC V n Layout References United States Search (Alt+Q) Mailings Review Don't…

A:

Q: d. List the sample points in the union of the events (OU e. List the sample points in the…

A: In this question we have to find out the probability of different events using the table, every cell…

Q: Calculate the probability that a randomly chosen policy holder from this portfolio will make a claim…

A: Let us define some events A : a policy holder is from group A. B : a policy holder is from group B.…

Q: For eace three events in the table, check the outcome(s) that are contained in the event. Then, in…

A: Probability: A probability tells the possible chance of a happening an outcome in an experiment. For…

Q: You are given the chance to play one of two games: One where there is a 20% chance of you winning 8…

A:

Q: The following table shows the number of students in three different degree programs and whether they…

A: Given:   Undergraduate Graduate Total Business 150 50 200 Engineering  150 27 175 Art &…

Q: The data below shows the SAT scores of 30 students at Martin Luther King High School in Florida.…

A: Given: 1561 1554 1536 1531 1523 1518 1515 1511 1506 1500 1499 1493 1490…

Q: 2. At an eSports tournament, m American, n Canadian, and k Korean League of Legends players sit in a…

A: Given information: Number of American players = m Number of Canadian players = n Number of Korean…

Q: If two points are selected on a straight line of length a units at random, find the probability that…

A: first Consider one of the ends of the line segment as origin. Let the two points chosen be at…

Q: Let X continue to be a random variable with a probability density function given by: (image) Find…

A: Probability density function can be calculated as f(x)= d/dx F(x) Where f(x) is probability density…

Q: Suppose that a 7% discount is independently applied to Web orders for clothing with probability…

A:

Q: Exercise 9.2 Consider an i.i.d. sample of size n from a N(μ, o2) distributed random variable X. (a)…

A:

Q: 9. A pair of dice is thrown. If the two numbers appearing are different, find the probability that…

A: When pair of  dice are thrown simultaneously, the sample space associated with the random experiment…

Q: b) Let Zi = X₁−μx ~N(0,1), and W₁ = Yi-Y~N(0,1), for i = 1,2,3,...,10, then: σχ σy i) State, with…

A: Given Zi~N(0,1) and Wi~N(0,1)  Result: t~F(a,b) Then  Mean=E(t)=b/(b-2)…

Q: Suppose X~ N(63, 2.1792). Use this distribution to help you answer the following question: What is…

A:

Q: Suppose you have a coin and you know that either: H₁: the coin is biased, showing heads on each flip…

A:

Q: The number of customers arriving per hour at a certain automobile service facility is assumed to…

A: Givenλ=7 customers will arrive per hour

Q: A batch of 401 containers for frozen orange juice contains 7 that are defective. Two are selected,…

A: as per bartlebt guideline expert have to answer first thre subparts only dear student please upload…

Q: 4. Suppose that X and Y are random variables having the joint probability distribution Y 2 1 - 3 5…

A: Given,   X=2 X=4 Total Y=1 0.15 0.10 0.25 Y=3 0.25 0.25 0.5 Y=5 0.15 0.10 0.25 Total 0.55…

Q: 1) The following spinner was spun 32 times. What is the probability of spinning A seven times?

A: There are 8 slots in the spinner, {A,B,C,A,B,C,C,B} If the spinner is spun we get any one of these…

Q: expected return is 13% with a standard deviation of 30%.

A:

Q: 4. A biologist knows that the average length of a leaf of a certain full-grown plant is 4 inches.…

A:

Q: 14. How many different arrangements are there of all the letters in the word PINEAPPLE? a. 362 880…

A:

Q: A student tosses 4 coins. What is the probability that all 4 coins show heads? O 1/2 O 1/4 O 1/8 O…

A:

Q: 4. For not mutually exclusive events A and B, P(A) = 0.59, P(B)=0.46 and P(An B)=0.28. Find the P(A…

A: Given P(A) = 0.59 P(B) = 0.46 P(A∩B) =0.28

Q: ball Team Selection A football team consists of 20 each freshmen and sophomores, 15 juniors, and 10…

A: Given: n(freshman) = 20 n(sophomores) = 20 n(juniors) = 15 n(seniors) = 10 n(selected players) = 4

Q: 5) Two standard 6-sided dice were rolled 23 times. What is the probability of getting a sum greater…

A: When  X~Bin(n,p) Then pmf will be  P(X=x)= nCxpx(1-p)n-x ; x=0,1,2,...,n

Q: - Let Y₁ and Y₂ be two random variables with joint density 1. E[Y₁ - Y₂] 2. E[Y₁+Y₂] 3. E[Y₁] 0 1 2…

A:

Q: The probability that a customer's order is not shipped on time is 0.03. A particular customer places…

A:

Q: Starting at some fixed time, let F(n) denotes the price of a First Local Bank share at the end of n…

A: Given: let F(n) denotes the price of a First Local Bank share at the end of n additional weeks, n ≥…

Q: 3. How many arrangements are there of the letters in the word CANADIAN?

A: Introduction: We need to find the number of possible arrangements of the letters in the word…

Q: Give a 99.5% confidence interval, for μ1−μ2μ1-μ2 given the following information. n1=25, ¯x1=2.4 ,…

A: There are two independent samples which follows normal distribution. We have to construct 99.5%…

Q: A committee will be formed with 4 managers and 4 engineers selected randomly without replacement…

A:

Q: e) Use the one-parameter regular exponential family definition to find the functions, h(x), c(0), w…

A:

Q: ii) Find the mean and variance of the statistic T = Σ117,7

A: It is given that Zi and Wi follows Standard Normal distribution i.e N(0,1).

Q: A restaurant chef prepares tossed s probability that the salad contains m (a) on a given day (b) on…

A:

Q: 77. A supermarket surveyed customers one week to see how often each customer shopped at the store…

A: When there are no outlers and data follows a normal or uniform trend then we use mean and standard…

Q: 1. An airline estimates that the probability is 0.05 tha people making reservations on a certain…

A: Given Information: The probability that people making reservations on a flight will not show up is…

Q: Calculate the probability that a randomly chosen policy holder from this  portfolio will make a…

A: Let us define some events A : a policy holder is from group A. B : a policy holder is from group B.…

Q: world price determined after trade? • How do you demonstrate gains from trade? • What are the key…

A: The Heckscher-Ohlin model incorporates a number of realistic characteristics of production from the…

Q: π ). The pair (μ(π ), σ (π )) trace out a curve in the plane as π varies from 0 to 1. Plot this…

A: For x1 variable μ1 = 1 and σ1 = 0.1' For x2 variable μ2 = 0.8 and σ2 = 0.12 ρ = −0.8.   0.1

Q: 7. Suppose it is claimed that amongst the population of human adults, the number of hours spent…

A: given data μ = 7σ2 = 1.1n = 62P(x¯>7.133 or x¯<6.867) = ?

Q: 8. Suppose one is told that the time, one has to wait (in mins.) for a bus on a certain bus stop is…

A:

Q: Find the standard deviation of the given data rounded to the nearest hundredth. 3, 4, 5, 7, 10, 12,…

A: Given data is3,4,5,7,10,12,15sample size(n)=7

Q: If A and B are independent then P(A and B)= P(A/B).

A: We know, if A and B are independent then,  P(A|B) = P(A) and, P(B|A) = P(B) And, P(A ∩ B) = P(A|B)…

Q: Let X₁, X2, X3, X30 be a random sample of size 30 from a population distributed with the following…

A: Given X~ exp(1/2)

Q: e n Show that for any &> 0 and S, ₁X₁, lim P(S₁-0 ≥ 8) = 0. =

A: We will use Chebychev's inequality to find the required limit of probability.

Q: Suppose there is a random vector (X, Y) of density f(x, y): 10<x<3y³€ • Find E(Y|X) • Find…

A:

Q: 8) The probability that Olivia goes to Queen's university is 0.25. The odds in favor of Alice going…

A: given data event A: olivia goes to queen's univesity  event B: alice goes to queen's univesity…