Find the variance and standard deviation of X

Q: Consider an ETNB distribution with r = -0.25 and ß = 1. Determine the probability of the ETNB for…

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Q: ind the variance and the standard deviation for x and y in Table 1

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Q: If the range of X is the set {0,1,2,3,4} and given that each outcomes are equally like to occur,…

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Q: Metabolic rate is the rate at which someone consumes energy. Data (calories per 24 hours) from 7…

A: n=7 Data: 1792,1666,1362,1614,1460,1867,1439

Q: Show that adding a constant K to a random variable increases the average by K but does not change…

A: Suppose I have  a below data For random variable X 2,5,8,4 consider k= 2 Average of 2,5,8,4 using…

Q: A flood-control system is designed such that the probability of the system capacity being exceeded X…

A: Given information: The table below shows the probability that in 30 years, the system capacity will…

Q: and second components meet specifications are 0.96 and 0.89, respectively. Let X be the number of…

A: The random variable X defines the number of components in the assembly that meet specification.

Q: Suppose that for a particular computer salesperson, the probability distribution of x = the number…

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Q: Simulate two Normally distributed random variables X1 and X2 with correlation 0.8, both should have…

A: Simulate two Normally distributed random variables X1 and X2 with correlation 0.8, both should have…

Q: Q5. Talk times of cellphones are described by the normal distribution with mean time 24 hours and…

A: X= Talk time on cell phone.Population mean :μ=24hoursStandard deviation :σ2=2σ=2Here we need, P (…

Q: Suppose that the random variable X measures the number of hot dogs purchased in a food court in an…

A: CorX,Y=0.75VX=VY=36W=2X+3Y

Q: Suppose the probabilities that there will be 0,1,2, or 3 power failures in San Jose, CA in July are…

A: Solution: a. Let X be the power failure. From the given information, Then, the mean number of…

Q: Identify the distribution of the standardized version of a normally distributed variable.

A: The distribution of the standardized version of a normally distributed variable have the mean 0 and…

Q: The random variable x represents the number of emails received at a help desk in one hour, and it…

A: given data, random variable x represent the number of emails received at a help desk in one hour…

Q: Suppose that for a given computer salesperson, the probability distribution of x = the number of…

A: The data of number of system sold by the sales person in one month is, x 1 2 3 4 5 6 7 8 P(x)…

Q: A study of Sandhill Cranes determines that the distance they travel a day is normally distributed…

A: According to the provided information, Mean (μ) = 267 Standard Deviation (σ) = 86

Q: The salaries of physicians in a certain speciality are approximately normally distributed. 25% of…

A: Suppose the random variable X defines the salary of a randomly selected physician.It is given that,…

Q: Compute the standard score (Z-score) for x, when x = 42, the mean of the distribution = 26, and the…

A: x = 42Mean = 26Standard deviation = 8

Q: Mean= Variance= B Standard Deviation= 19 20 21 Find the mean, variance, and standard deviation of…

A: Given that  Probability distribution table x 19 20 21 22 23 P(x) 0.24 0.23 0.31 0.11 0.11…

Q: Solve the problem. Assume that mountain lions' weights are normally distributed with a mean of 62.6…

A: We have given that,  X be the random variable from normal distribution with mean (μ) = 62.6 ,…

Q: Random samples of a Gaussian distribution will fall within two standard deviations of the mean with…

A: Concept:  68% of the data is within 1 standard deviation (σ) of the mean (μ), 95% of the data is…

Q: A population of values has a mean of 233.8 and standard deviation of 44.4.  Find the probability…

A: Suppose the variable of interest is x.It is given that; x has mean of  and the standard deviation…

Q: A fitness center bought a new exercise machine called the Mountain Climber. They decided to keep…

A: Given Information :  A fitness center bought a new exercise machine called the Mountain Climber.…