Suppose X is a discrete random variable whose probability distribution function f(x) is given by the following table. Find the expected value, E(X), of X. Round to 4 decimal places if needed. x f(x) -2 -1 0 1 0.1 0.2 0.3 0.4

Q: Let X be a random variable with the following probability distribution. Value  x  of  X P (X=x) 10…

A: Let  be a random variable with the following probability distribution.Value x of…

Q: The probability distribution function of the discrete random variable X is x -1 0 2 5 P(X=x) 0.10…

A: Given :   X -1 0 2 5 P (x) 0.10 0.50 0.30 0.10

Q: Let X be a random variable with the following probability distribution. Value  x  of  X P=Xx 20 0.35…

A: The probability distribution of X is, X P(X) 20 0.35 30 0.1 40 0.25 50 0.3

Q: Calculate the expected value of X, E(X), for the given probability distribution. E(X)= X P(X = x)…

A: Given probability distribution of X is,x2468P(X = x)We need to calculate the expected value of X.

Q: Let X be a random variable with the following probability distribution. Value x of X P(X=x) -2 -1 0…

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Q: Let X be a random variable with the following probability distribution. Value  x  of  X P (X = x) 20…

A: It is given that, X is a random sample. The given data follows probability distribution. We have to…

Q: (a) Find the expectation E (X) of X. E (x) = 0 %3D (b) Find the variance Var(X) of X.

A: We have to calculate the mean and variance of X for given probability distribution.

Q: =2 = 3 = 4 = 5 6 7 8 00 Let X be a random variable with the following probability distribution.…

A: Step 1:a)The probability distribution of the random variable X is given. Step 2:Consider the…

Q: (a) Find the expectation E (X) of X. E (x) = | %3D (b) Find the variance Var(X) of X.

A: The E(X) is defined as E(X) = ∑x.P(X = x) And variance of X is  V(X) = E(X2) - (E(X))2

Q: a) Find the expectation E (X) of X. E (x) = | %3D (b) Find the variance Var(X) of X. Var (x) = 0

A: Here given discrete probability distribution of x  Here use expected value and Variance formula

Q: Let X be a random variable with the following probability distribution. Value x of X P(X=x) -3 0.40…

A:

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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 >=3 or z =-1 ) = ? P ( z >=3 ) +P(  z =-1 ) = P( z = 3 ) + P( Z…

Q: Let X be a random variable with the following probability distribution. Value x of X P(X=x) -20 -10…

A: According to the given information, we haveThe probability distribution table for the given random…

Q: Let X be a random variable with the following probability distribution. Value x of X P (X=x) 0…

A: Solution

Q: Let X be a random variable with the following probability distribution. Valuex of X P(X=x) -10 0 10…

A:

Q: The probability of an event depends on the random variable X and can be expressed by the following…

A:

Q: Let X be a random varlable with the following probability distribution. Value x of X P (X=x) 10 0.10…

A:

Q: Let X be a random variable with the following probability distribution. Value x of X P(X=x) 30 0.45…

A: Let X be the random variable having probability distribution is,  X P(X=x)  30 0.45 40 0.15…

Q: Let X be a random variable with the following probability distribution. Value x of X P(X=x) -30 -20…

A: Probability distribution of X : X P(X=x) -30 0.1 -20 0.45 -10 0.2 0 0.1 10 0.15

Q: Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E (X)…

A: It is given that X is the random variable in probability distribution.

Q: (a) Find the expectation E (X) of X. E (x) = | %3D (b) Find the variance Var(X) of X. Var(X) = 0 %3D

A: Given: x p(x) 40 0.05 50 0.25 60 0.25 70 0.05 80 0.35 90 0.05 Total 1

Q: Let X be a random variable with the following probability distribution. Value x of X 4 5 6 7 P (X=x)…

A:

Q: Let X be a random variable with the following probability distribution. Value x of X P(X=x) -20 0.30…

A: There are 6 values of x are given. The probability values are given for those x values. We have to…

Q: Let X be a random variable with the following probability distribution. Value x of X P(X=x) -30 0.65…

A:

Q: Let X be a random variable with the following probability distribution. Valuex of X 0 10 20 30 40 50…

A: To find: 1. Expected value: E(X) 2. Variance of X : VAR(X)

Q: Let X be a random variable with the following probability distribution Value x of X 2 3 لیا 4 5 PX=x…

A: E(X)=∑X.P(X)E(X2)=∑X2.P(X)V(X)=E(X2)-(E(X))2

Q: Let X be a random variable with the following probability distribution. Value x of X P(X=x) -2 0.05…

A: Given probability distribution table is value x of X P(X=x) -2 0.05 -1 0.35 0 0.25 1 0.35…

Q: A talk radio station as four telephone lines. If the host is an able to talk (I.e., during a…

A: Here, X denotes the number of telephone lines (x). Mean of the distribution:…

Q: Let X be a random variable with the following probability distribution. Value x of X P(X=x) 10 0.30…

A:

Q: Let A be a random varlable with the following probability distribution. Value x of X P (X=x) -1 0.05…

A: Given that  The probability distribution table  X -1 0 1 2 P(X)  0.05 0.50 0.35 0.10   We…

Q: Let X be a random variable with the following probability distribution. Value x of X P(X=x) -20 0.30…

A: Let X be the random variable having probability distribution is,  X -20 -10 0 10 20 P(X=x)…

Q: Let X be a random variable with the following probability distribution. Value x of X P(X=x) 3 4 5 6…

A: X (X=x)  3 0.35 4 0.40 5 0.15 6 0.10 Then,  Expectation of X E(X) and variance of X…

Q: Let X be a random variable with the following probability distribution. Valuex of X 40 50 60 70 80…

A: Given data is Value x of X P(X=x) 40 0.15 50 0.15 60 0.25 70 0.30 80 0.05 90 0.10

Q: Calculate the expected value of X, E(X), for the given probability distribution. x 1 2 3 4 P(X =…

A: Given x 1 2 3 4 P(X = x) 0.2 0.1 0.6 0.1 E(X) =

Q: Y, (a) Find the expectation E (X) of X. E (X) = (b) Find the variance Var(X) of X. Var(x) =

A: Answer X          P[x] 20       0.1530       0.2040       0.1050       0.1060       0.1070…

Q: Calculate the expected value of X, E(X), for the given probability distribution. E(X) = X P(X = X)…

A: It is given that the proportion distribution of X in tabulation form.

Q: he probability distribution of a discrete random variable X is given. E(X)=? -2 -1 1 2 (x) 1/8 2/8…

A: We have to find E(x) ...

Q: Let X be a random variable with the following probability distribution. Value  x  of  X P (X =x) 0…

A: The probability distribution for random variable X is given.

Q: Let X be a random variable with the following probability distribution. Value x of X 0 1 2 3 P(X=x)…

A: Given Value of x        p(X=x)     0                      0.55     1                     0.30      2…

Q: Let X be a random variable with the following probability distribution. Value  x  of  X P(X=x) -2…

A: Given, X P(X=x) -2 0.25 -1 0.20 0 0.40 1 0.10 2 0.05

Q: Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E (X)…

A: The probability distribution table provided in the question is as follows :-Value x of…

Q: Suppose the gross profit per vehicle sold is  $1,820 .  The expected value of gross profit is,

A:

Q: Let X be a random variable with the following probability distribution. Value x of X P(X=x) 40 0.10…

A:

Q: A sociologist randomly selects single adults for different groups of​three, and the random variable…

A: X P (X ) 0 0.093 1 0.342 2 0.401 3 0.164