Find the expected value of the random variable. 3 4 P(x) 0.2 0.3 0.4 0.1

Q: 7. If Z is a standard normal random variable, (using the table) find i. P(Z< 1.7) ii. P(Z 2-0.16)…

A: If Z is a standard normal random variable, (using the table) we find given probabilities.

Q: None

A: sum of all probability in the probability distribution must be 1. Here is the given probability…

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: 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: Suppose X is a binomial random variable with n=100 and p=D0.3. Estimate P(X=40) by using the normal…

A: The normal distribution can be used as an approximation to the binomial distribution, under certain…

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: Proposition 2 x) = { x ²- P(x) = µ D V(X) = - ² · p(x) − µ² = E(X²) – [E(X)]² Example 11 (Example 6…

A: Given that  E(X)=Σxp(x) E(X2)=Σx2p(x) V(X)=E(X2)-(E(X))2

Q: Trivia Quiz - The probabilities that a player will get 6 to 11 questions right on a trivia quiz are…

A: X P(X) X*P(X) X2*P(X) 6 0.06 0.36 2.16 7 0.1 0.7 4.9 8 0.3 2.4 19.2 9 0.1 0.9 8.1 10 0.14…

Q: et X be a random variable with the following probability distribution: -3 6 9 f(x) | 1/6 1/2 1/3…

A:

Q: The plot to the right shows the probability function of a random variable Z. Estimate the needed…

A: For the given plot Find P ( z &gt;=3 or z =-1 ) = ? P ( z &gt;=3 ) +P(  z =-1 ) = P( z = 3 ) + P( Z…

Q: Find the expected value for the random variable. 6 8 10 12 P(y) 0.4 0.4 0.08 0.12 V 7.84 9 07.76…

A: The given random variable, y 6 8 10 12 P(y) 0.4 0.4 0.08 0.12 We have to find the expected…

Q: Find the expected value from the expected value table. x P(x) x*P(x) 2 0.1 2(0.1) = 0.2 4…

A: Given, x P(x) x*P(x) 2 0.1 2(0.1) = 0.2 4 0.3 4(0.3) = 1.2 6 0.4…

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: Find the expected value for the random variable. 9. 12 15 18 21 P(z) 0.11 0.25 0.39 0.16 0.09 E(z) =…

A: Formula : E(z) =  Σz * p(z)

Q: Discrete random variable X has the following probability distribution. Find the value of the…

A: The probability mass function P(X=x) of a discrete random variable x has the following properties…

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: Give the probability distribution for the indicated random variable. HINT [See Example 3.] (Enter…

A: Sample space: The set of all possible outcomes of a probability experiment is called sample space of…

Q: Give the probability distribution for the indicated random variable. HINT [See Example 3.] (Enter…

A: Three fair coins are tossed and X is the number of heads minus the number of tails. Total number of…

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: X 1 1.5 1.5 2.5 3 y 1 2 3 4 5 fxy(x, y) 1/4 1/8 1/4 1/4 1/8 Determine the marginal probability…

A: We have given the following joint distribution of X and Y xyfXY(x,y)111/41.521/81.531/42.541/4351/8

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

A:

Q: Find the mean and the variance of the discrete random variable X, whose probability distribution is…

A:

Q: Fill in the P(X=x) values to give a legitimate probability distribution for the discrete random…

A: From the given information, X P(X=x) -2 0.1 1 0.23 4   5 0.13 6   Let P(X=4)=a and…

Q: Find the expected value for the random variable. 9 12 15 18 21 0.14 0.24 0.37 0.18 0.07 Z P(z) E(z)…

A:

Q: e) Mean of the random variable X.

A: Given: probability distribution of X and we need to find the mean of X

Q: Handwritten

A: Steps

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: 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: The probability of a successful SSD read-write during shock tests of an SSD storage product is 0.8.…

A: Given that  p = 0.8  X ~ Geometric (p = 0.8) p = Probability of a successful SSD read-write during…

Q: What is the probability of x bar = 0? What is the probability of x bar = 1? %3D What is the…

A:

Q: Find the probability distribution and CDF of X.

A:

Q: A coach has 6 players that will join track and field. The random variable that is being studied is…

A: We have to find given probabilities

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: Find the expected value for the given probability distribution. X P(x) 0 0.19 1 0.28 2 0.14 3 0.26 4…

A: Given Find the expected value for the given probability distribution. X.            P(x) 0.…

Q: A random variable X has the probability function as given in the table below.  It is easy to verify…

A:

Q: P(x) D 0 0.1666 1 0.3347 2 0.2857 In the probability distribution to the right, the random variable…

A: Given : The random variable X represents the number of hits a baseball player obtained in a game…

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.