Find the expected value for the random variable. 21 12 9. 15 18 P(z) 0.12 0.21 0.41 0.18 0.08 (Type an integer or a decimal.) E(z) =| %31

Q: The distribution of the time until change (in days) of a Web site is approximated in the following…

A:

Q: You and your friend carpool to school. Your friend has promised that he will come pick you up at…

A: X~U(1,13)

Q: Mlal Fandom variable, use the binomial probability table to find the probabilities below. a. P(x<11)…

A: The pdf of binomial distribution is,     The objective is to find the required probabilities.

Q: Find the expected value of the random variable. 2 P(x) 0.20 X 3 4 5 0.45 0.10 0.25

A:

Q: e expected value of this random variable is 7.9, mplete the table. Show your work. P(x) 10 0.5

A: In this question, the expected value is given. Unknown entries are to be determined.

Q: The random variable x represents the number of phone calls an author receives in a day, and it has a…

A: It is given that X : number of phone calls an author receives in a day

Q: Find the expected value for the random variable XX. xx -4 1 4 6 12 P(X=x)P(X=x) 0.15 0.23 0.2 0.2…

A: given: x -4 1 4 6 12 P(X=x) 0.15 0.23 0.2 0.2 0.22 The expected value for the random…

Q: Find the expected value of the random variable. 3 4 P(x) 0.10 0.05 0.30 0.55 What is the expected…

A: We have given that,  X is random variable  having p.m.f  X  :    2           3            4…

Q: Probability Scores 0.05 2 0.15 3 0.05 4 0.15 5 0.05 9 0.35 10 0.2 13 Find the expected value of the…

A: Given: The provided data is: Scores Probability 2 0.05 3 0.15 4 0.05 5 0.15 9 0.05 10…

Q: The random variable x is the number of occurrences of an event over an interval of 10 minutes. It…

A: Here we have given the information, The random variable x is the number of occurrences of an event…

Q: You and your friend carpool to school. Your friend has promised that he will come pick you up at…

A: A random variable X~U(3,  11) f(x)=111-3      ;    3≤X≤11 f(x)=18      ;   3≤X≤11

Q: Let x be a random variable with the following probability distribution 1 3 P(x) 0.3 k 0.1 0.2 Find…

A: Solution: 10. From the given information, the probability distribution of X is

Q: Which of the following is incorrect? O The expected value of the square of a random variable is…

A: Given the 4 statements about random variables and probability.Want to choose which one is incorrect…

Q: The table to the night lists probabilities for the corresponding numbers of girls in three births…

A: The table lists probabilities for the corresponding numbers of girls in three births.

Q: the probability distribution of the number  of motorcycles owned by a family(x) is as follows x 0 1…

A: It is given that the probability distribution of the number of motorcycles owned by a family.

Q: A random variable X has the probability distribution as shown in the table below X 10 1 2 5 P(X) 0.1…

A: x P(x) 0 0.1 1 0.3 2 0.4 5 ?

Q: Find the expected value for the random variable.

A:

Q: The discrete random variable Xhas the probability distribution given by: 7 9. 12 13 15 P(X==) u/2…

A: Given: The probability distribution is, x 7 9 12 13 15 PX=x u2 0.05 0.35 u 0.15 The…

Q: c.) Assume that the utility of n dollars is . Write an expression for the expected utility of the…

A: Given: Lets consider the utility of n dollar is 10. Trials=100

Q: Probability Scores 0.15 1 0.2 3

A: The formula of expected value is:

Q: Eighty-five percent of adults want to live to age 100. You randomly select five adults and ask them…

A: 85% of adults want to live to age 100. i.e., Sample size (n) = 5

Q: Find the expected value E(X) of the following data. Round your answer to one decimal place. 2 3 4 5…

A: xP(x)20.230.240.250.160.3Find expected value = ?

Q: Let x be a random variable that represents the batting average of a professional baseball player.…

A: Since you have posted a question with multiple subparts, we will solve the first three subparts for…

Q: Let the random variable X be the number of rooms in a randomly chosen rented unit in San Jose,…

A:

Q: Question 1 For a random variable with the given probability distribution function. 1 3 4. 5 6 7 f(x)…

A: Given probability distribution is, x 0 1 2 3 4 5 6 7 f(x) 0.05 0.11 0.13 0.13 0.14 0.15 0.12…

Q: The random variable given in the accompanying table is because

A: Here given for the Probability distribution of Number of girls.

Q: The random variable X is the number of color television sets owned by a randomly selected household…

A: The random variable X and the value μX is calculated by the formula, μX=∑x×Px The value σX is…

Q: Find the expected value of each random variable. а) х 15 30 45 P(X = x) 0.4 0.1 0.5 b) x P(X=x) 1 7…

A: From the provided information, The probability distribution table are as follow: a) X 15 30…

Q: The discrete random variable X has the following probability distribution: -10 0 10 p(x) 0.20 0.40…

A:

Q: Probability Scores 0.25 2 0.15 3 0.08 5 0.1 7 0.12 8 0.3 12 Find the expected value of the above…

A: It is given that the probability scores of a random variable.

Q: You and your friend carpool to school. Your friend has promised that he will come pick you up at…

A:

Q: Find the expected value of the random variable. 3 0.3 X P(x) 2 0.2 What is the expected value? 4 5…

A: According to the given information, we have The value of X : 2, 3, 4, 5 The probability distribution…

Q: 17.4 17.04 5.86 P(X=x) -23 0.50 [Choose] [Choose ] [Choose ] -17 0.25 -9 0.15 -3 0.10

A:

Q: 29. Let X and Y are two discrete random variables with joint probability distribution f (x,y). The…

A: Here joint distribution of x and y is given and for marginal of represent as h(y) And for q.30 use…

Q: Find the expected value of the random variable. X POX=X X)/ 0. P(X=x) 0.5 O 1.00 O 1.20 O 0.80 O…

A: x p(x) 0 0.5 1 0.2 2 0.3

Q: Find the expected value of the above random variable.

A: Here we have given the discrete probability distribution. We have to find the expected value of the…

Q: Let wages denote a person's hourly wages and edu denote their years of education. Suppos wages = B1…

A: The regression equation is given as  wages =β1+β2edu+β3edu2+e

Q: The EPA rates the mean highway gas mileage of the 2020 Hyundai Elantra GT is believed to be 28 miles…

A: For the distribution of the mileage (in miles per gallon) of the specified vehicle, it is given…

Q: Probability Scores 3 7 8 9 10 12 0.05 0.25 0.35 0.1 0.05 0.1 0.1 W|N 13 Find the expected value of…

A: Expected value is given by  E(x)=∑pi×xi

Q: Compute the expected value for X.

A: here  given  joint distribution of X and Y  here E(X) = ∑X.p(X)

Q: Find the expected value for the random variable. 2 3. 4 5 P(x)| 03 0.1 0.4 0.2 O 4.5 O 3.5 3.1 O 3.7

A: The formula for mean is given by the formula μ=EX=∑xifxi.