ind the mean, variance, and standard deviation of ?. What is the probability that ? falls within the interval (? − 15, ? + 15)?

Q: For a random variable with the given probability distribution function. 3 5. f(x) 0.23 0.15 0.25…

A: Given data,   P(X≥2)=?

Q: Suppose X is a random variable with mean 10 and variance 25. Suppose Y is a random variable with…

A: Solution: From the given information, mean of X is 10, variance of X is 25, mean of Y is 20 and…

Q: (8). Consider the probability distribution for the random variable X shown here: -10 0 5 P(X=x) 3 .5…

A: The objective is to find the standard deviation of X.

Q: (1) What is the mean for random variable X? (a) v2 (b) v3 (c) V5 (d) 5 (2) What is the standard…

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

Q: If x is a binomial random variable, compute the mean, the standard deviation, and the variance for…

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

Q: 3. Find the mean and variance of the random variable using the values in the table below. f(x) 0.25…

A: For the given data Find Mean =? variance =?

Q: Find the mean, variance, and standard​  ​x​│​ 1​​ 3​​ 6​​10​ deviation of the probability…

A:

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: A. Compute the mean, variance, and standard deviation of the following situation. - The number of…

A:

Q: The following is the probability distribution of the number of accidents in one day. X 7 8 9. 10 11…

A:

Q: he number of homes sold by a realtor during a month has the following probability distribution:…

A:

Q: Suppose that T is a random variable with the following probability distribution: T: 3 4 p(t): 0.08…

A:

Q: n = 45, p = .50. ? =   ? =   (b) n = 1, p = 0.25. ? =   ? =   (c) n = 100, p = 0.90.

A: Hi! Thank you for the question. As per the honor code, we are allowed to answer three sub-parts at a…

Q: Given that X is a normally distributed random variable with mean of 50 and standard deviation of 2,…

A: According to the given information, we have Mean = 50 and Standard deviation = 2

Q: Consider the probability distribution of random variable N: 1 2 P(n) 0.2 0.2 0.6 Consider the…

A: Expectation of a Discrete Random Variable: The expectation of a discrete random variable X, denoted…

Q: - Calculate the variance of X, Var (X) =?, By finding the value a in the table so that the X random…

A: From the given information, The probability distribution table is as given below: x Pr(X=x) 1…

Q: 10. The random variable X, representing the number of chocolate chips in a cookie, has the following…

A:

Q: For a random variable that is normally distributed with mean equal to 1300 and standard deviation…

A:

Q: Suppose that the random variable xx, shown below, represents the number of speeding tickets a person…

A: Solution x P(x) 0 0.2775 1 0.2546 2 0.2388 3 0.1736 4 0.0449 5 0.0106 6+ 0.0000…

Q: In a convenient store, the number of tellers (X) busy with customers at 12:00 noon varies from day…

A:

Q: The following table lists the probability distribution of a discrete random variable x: x| 2 3 4 5 6…

A: The probability distribution of X is given. In order to find the standard deviation we need to find…

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

A:

Q: If X is a normally distributed random variable with a mean of 10 and standard deviation of 4, then…

A: Given that, Mean = 10 Standard deviation = 4

Q: Which of the following does not belong to the steps in finding the variance of probability…

A: Variance : A applied mathematics measure of the dispersion between values in an exceedingly…

Q: 3. Find the variance and standard deviation of the probability distribution of a random variable X…

A: Variance=EX2-E2(X)=22920+42120+5215+32310-2920+4120+515+33102=10.3-32=1.3

Q: The random variable ?, which is the number of telephones coming to a telephone exchange in a…

A: Part (a) Let X be a random variable denotes the number of telephone calls coming to a telephone…

Q: Suppose X is a normal random variable with mean 10 and variance 4: X~N?(10,4) and standard…

A: Given data,Mean=10Sd=2

Q: Find the mean, ?, and standard deviation, ?, for a binomial random variable X. (Round all answers…

A:

Q: Consider selecting a random sample of size ?=2n=2 (with replacement) from a population consisting of…

A: The Mean and Standard Deviation are given by :    mean = sum of the observationsnumber of…

Q: The number of computers sold per day at a local computer store, along with its corresponding…

A: To find: 1.mean 2.Variance 3.Standard deviation

Q: 3. Look at the relative-frequency table below of the probability distribution for the frequency with…

A:

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

A:

Q: The following data are the number of hours spend by a student who plays online games for a week.…

A:

Q: If ? is a binomial random variable, compute the mean, the standard deviation, and the variance for…

A:

Q: If ?x is a binomial random variable, compute the mean, the standard deviation, and the variance for…

A:

Q: Suppose that the random variable xx, shown below, represents the number of speeding tickets a person…

A: given: x P(x) 0 0.3891 1 0.281 2 0.1497 3 0.098 4 0.0471 5 0.0351 6+ 0 Plug in…

Q: For a random variable that us normally distributed with mean equal to 1300 and standard deviation…

A:

Q: 3. The number of suits sold per day at a department store is shown in the table, with the…

A: Given data, X P(X=x) 19 0.2 20 0.2 21 0.3 22 0.2 23 0.1

Q: The following is the probability distribution of the number of accidents in one day. x 7 8 9 10 11…

A: As per our guidelines we are suppose to answer three sub parts. X 7 8 9 10 11 12 P(X=x) 0.13…

Q: The random variable x represents the number of credit cards that adults have along with the…

A: The mean is, Ex=∑xPx=0×0.07+1×0.68+2×0.21+3×0.03+4×0.01=0+0.68+0.42+0.09+0.04=1.23 Thus, the mean…

Q: Find the variance and standard deviation of the probability distribution of a random variable X…

A: Variance=EX2-E2(X)=32730+5213+721330-3730+513+713302=31.6666666667-5.42=2.5066666667

Q: 1. The test scores of an Engineering Mechanics class with 800 students are distributed normally with…

A: Given,sample size(n)=800mean(μ)=75standard deviation(σ)=7

Q: Use the probability distribution for the random variable x to answer the question. 1 2 3 4 5 p(x)…

A: Obtain the expected value   The expected value is obtained below as follows:   From the information,…

Q: se the following information to answer A-C. The table below shows the probablity of a certain number…

A: From the given information, A) probability that more than 2 of 4 randomly selected students have…

Q: 1) A private entity has recorded that the population average of unemployed persons per year in a…

A: From the given information n = 100 μ=230 x=24 σ=2

Q: The number of computers sold per day at a local computer store, along with its corresponding…

A: Solution

Q: Consider the following probability distribution for a discrete random variable X. Find the missing…

A:

Q: 1. Complete the table below by finding the variance and standard deviation of the following…

A:

Q: Examine the following probability distribution: 5 10 15 20 25 30 35 40 45 50 P(x) 0.01 0.05 0.14…

A: Since multiple parts are given , first  part is  answered with detailed explanation. Please repost…