Find the variance and standard deviation of the following random variable. Hint: start by writing the distribution for the random variable X2 . x P(X = x) 0 0.5 1 0.2 2 0.3

Q: e. Find the standard deviation of the random variable X.

A: A random Sample of 200 residents; n=200 p=0.254

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A: Given are three sets of data, namely for student A, B and C: Enter data in Excel and calculate mean…

Q: Find the mean and variance for the Binomial distribution, P=0.36 and n = 33

A: Answer: From the given data, P = 0.36  and  n = 33

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A: The given is, p=11000=0.001Mean =µ =1p=1000Variance =qp2=1-0.0010.0012=999000Standard deviation…

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A:

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A:

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A: GivenMean(μ)=103standard deviation(σ)=15sample size(n)=9

Q: Find the variance of x or the number of cups of coffee.

A: Given Information:

Q: Suppose the variance of X is 14. What is the variance of .47X?

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Q: Fit a binomial distribution for which the Mean is 6, and the Variance is 4.

A: A Binomial distribution is needed to be fit with mean 6 and variance 4.

Q: Find the variance and standard deviation of each of the following probability distributions. Write…

A: Given that  The probability mass function of X is  x 0 1 2 3 P(x) 0.10 0.45 0.25 0.20 Note:…