4. The following is the probability distribution of a random variable X: 1 k X P(x) Determine the value of k, expectation of X and standard deviation of X. 3 0.2 4 0.15

Q: Let y be a random variable having anormal distribution with a mean equal to 250 and a standard…

A:

Q: Consider the following probability distribution of the random variable x. 10 20 30 f(x) 0.30 0.40 ?…

A:

Q: Q.3. Consider the following discrete probability distribution: x P (x) 5 0.1 10 0.15 15 0.25 20 0.5…

A: Given, Discrete probability distribution  X P(X) 5 0.1 10 0.15 15 0.25 20 0.5

Q: Consider the following probability distribution of the random variable x. f(x) 0.50 1 0.25 0.10 0.10…

A: Given probability at different point  P(X=0)= 0.50, P(X=1)=0.25, P(X=2)=0.10, P(X=3)=0.10,…

Q: Find a value X0 of the random variable X that satisfies the following probability. P(X > X0)=0.025

A: here mean = 46 standard deviation = 5

Q: The random variable x represents the number of tests that a patient entering a clinic will have…

A: According to the given information, we have x 0 1 2 3 4 P(x) 317 517 617 217 117

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

A: Rules of probability distribution: The probability values of each value of x should be between 0 to…

Q: x is a normally distributed random variable with a mean of 3 and a variance of 4. Find the…

A: Given that X follows a normal distribution with mean=3 and variance=4. So standard deviation=4=2We…

Q: Select one: 1.4475. (1. 1 = 0.95 and a 2 and a 2. 2 anda? 1.4475. 1. 0.95 to 2.

A:

Q: A small store keeps track of the number X of customers that make a purchase during the first hour…

A: Given: Probability distribution of X: x 0 1 2 3 4 fx 0.1 0.1 0.1 0.1 0.6 To find the…

Q: Let X be a random variable with a mean equal to 100 and a standard deviation equal to 15. Let…

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Q: 1. Let x be the number of emergency root canal surgeries pefromed by Dr. Payne in a given week. The…

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Q: Consider the following probability distribution of the random variable a. f(x) 0.34 1 0.22 0.17 0.10…

A: P(X≤2)= ?

Q: The discrete random variable X is the number of students that show up for Professor Jones' office…

A: We have given that, X is a discrete random variable i.e. number of students.   The probability…

Q: Suppose the random variable X has the following probability distribution. x:0, 2, 4 P(x=x)=0.2 0.1…

A: From the provided information The probability distribution table is as follow: X 0 2 4…

Q: X P(x) 0 0.32 1 0.31 2 0.20 3 0.17 a) Find the mean of the probability distribution above. b) Find…

A: Given that  Probability distribution.  X 0 1 2 3 P(x) 0.32 0.31 0.20 0.17

Q: 3. A random variable x has this probability distribution: X 1 2 3 4 5 P(x) .1 .3 .4 .1 ? .05 a. Find…

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Q: 6. A discrete random variable can assume 5 possible values, as listed in the accompanying…

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Q: Let X be a random variable with the following probability distribution: X -4 3 5 f(x) 0.3 0.2 0.5…

A: Given,E(X)=∑X.f(X)

Q: Exercise 4. A discrete random variable X has the following probability distribution: 13 18 20 24 27…

A: The given data is  xi 13 18 20 24 27 p(xi) 0.22 0.25 0.20 0.17 0.16 The formula for the mean…

Q: Consider the following probability distribution of the random variable a. f(x) 0.34 1 0.22 2 0.17 1…

A: Given x        f(x) 0        0.34 1        0.22 2        0.17 3        0.10 4        0.17

Q: A random variable x has a standard normal probability distribution.  Which of the following…

A: Given that a random variable x has a standard normal probability distribution.

Q: 1. Let X be a random variable with probability f(z) = { I= 1,2, 3, 10, elsewhere. Find the…

A: As per our company guidelines we are supposed to answer only first question. Kindly repost other…

Q: Suppose the probability distribution of x, the number of defective tires on a randomly selected car…

A: The random variable x be the number of defective tires on a randomly selected car checked at a…

Q: Find E(X), Var(X), and the standard deviation of X, where X is the random variable whose probability…

A: According to given data: The value of E(X): EX=149+249+319EX=49+89+39EX=159EX=1.66

Q: For the random variable X defined by the probability function below, answer the following questions.…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: 2 The time to complete the eight-mile run around Mackinaw Island has a normal distribution The mean…

A: Given Information: Mean μ=56 Standard deviation σ=5

Q: The random variable X represents the number of tests that a patient entering a hospital has. Find…

A: The question is about discrete prob. dist. Given :

Q: The following table provides a probability distribution for the random variable x. x f(x) 3 0.25 6…

A: We have given a probability distribution for the random variable x as follows: x f(x) 3 0.25…

Q: The following table provides a probability distribution for the random variable x. (a)Compute E(x),…

A: We have given the following probability distribution table  x f(x) 8 0.25 16 0.50 24 0.25

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

A:

Q: Let X be a random variable with the following probability distribution: X -2 3 5 f(x) 0.5 0.2 0.3…

A: population mean : μ = E(x)

Q: c)      Determine the standard deviation σ of x

A: x p(X) xp(x) (x-xbar)^2 p(x)*(x-xbar)^2 0 0.8 0 0.0625 0.05 1 0.15 0.15 0.5625 0.084375 2 0.05…

Q: 3. The discrete random variable Y has the following probability distribution: Y 25 26 27 28 29 P(Y)…

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Q: A random variable x has a standard normal probability distribution.  Which of the following…

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Q: x f(x) (3) 0 0.15 1 ? 2 0.3 3 ? 4 0.2 the mean of the above distribution is known to be 2.15 (i.e.,…

A: We have given that probability distribution table.

Q: 14. Calculate the variance of the following probability distribution function (pdf) for the discrete…

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Q: 3. Given the following discrete probability distribution, x P (x) 42 0.375 65 0.15 70 0.225 75 0.05…

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Q: If the following table represent a probability distribution with an expected value of 9. P(x) 2a 4a…

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Q: 16. A study of freely forming groups in cafes throughout Europe examined the number of individuals…

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A: Given data,   Check whether it is probability distribution or not?

Q: Assume X has the following probability distribution: X 1 2 3 4 P(X) .1 .5 .2 .2 Compute the…

A: Given that probability distribution table.  X 1 2 3 4 P(X) .1 .5 .2 .2