Let X be a random variable with the following probability distribution: X -2 3 5 f(x) 0.5 0.2 0.3 Find the standard deviation of X. The standard deviation is. (Round to two decimal places as needed.)

Q: The probability distribution of a random variable X is given.  x     450     500     500     555…

A: Given Data: x P(X=x) x P(x) x^2 P(X) 450 0.1 45 20250 500 0.2 100 50000 500 0.1 50 25000…

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: Assume that the probability of a being born with Genetic Condition B is �=1/6. A study looks at a…

A: the probability of a being born with Genetic Condition B is (p)=1/6sample size(n)=532

Q: x P(x) 0 0.100 1 0.250 2 0.250 3 0.300 4 0.100   Verify it is a Probability Distribution. Find the…

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Q: A random variable X has the probability function as given in the table to the right. It is easy to…

A: Given that - A random variable X has the probability function as given in the table to the right.…

Q: Select one: O a.0.25 b.None C.-0.8 d.0.80 e.0.98 f.-0.98

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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: X P(x) 2 0.15 6 0.15 0.1 12 0.6 Find the mean and standard deviation of this probability…

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Q: x P(x) 0 0.25 1 0.25 2 0.05 3 0.45 Find the standard deviation of this probability distribution.…

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Q: The random variable X, representing the number of errors per 100 lines of software code, has the…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

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: Find the variance of the following discrete probability distribution. Formula in the image attached…

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Q: Let X be a random variable that can take the values 5, 9, or 13. And let f(x) be its probability…

A: Variance : Variance formula for the probability distribution is given by                  V(X) =…

Q: X P(x) 0 0.05 1 0.1 2 0.2 3 0.65 Find the standard deviation of this probability distribution. Give…

A: The formula to calculate the standard deviation is:

Q: Complete the table below to find the mean, variance and standard deviation. Round all values to 3…

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Q: Let X be a random variable with the following probability distribution: - 4 3 5 f(x) 0.6 0.3 0.1…

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Q: Let X be a random variable that can take the values 2, 9, or 13. And let f(x) be its probability…

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Q: Verify whether the given table represents a probability distribution.  In those cases where a…

A: According the probability theorem the sum of all the probabilities is 1. Therefore, for the given…

Q: Let x be a continuous random variable that is normally distributed with a mean of 22 and a standard…

A: The mean and standard deviation are 22 and 5, respectively.

Q: X P(x) 0.1 0.1 2 0.25 3 0.55 1 Find the standard deviation of this probability distribution. Give…

A: According to the given information, we have The probability distribution table is given by, X…

Q: Find the standard deviation of this probability distribution. Give your answer to at least 2 decima…

A: Table with necessary calculation is given as:

Q: Calculate the mean and the standard deviation of the probability distribution using a TI-83, TI-83…

A: Let X be the random variable for the number of shots made.  The probability distribution of X is…

Q: Calculate the standard deviation ?

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Q: x f (x) 0 0.80 1 0.15 2 0.04 3 0.01 The mean and the standard deviation for the number of…

A: Given that The number of electrical outages in a city varies from day to day. Assume that the number…

Q: Let the random variable X = the number of motor vehicle accidents per student in one year. Find the…

A: Given data is  x 0 1 2 3 4 5 probability 0.15 0.29 0.25 0.18 0.10 0.03

Q: The table below shows the probability distribution of the random variable X. a. Find the mean of the…

A: x P(X=x) x.P(x) x2 x2P(X=x) 1 0.3 0.3 1 0.3 2 0.4 0.8 4 1.6 3 0.3 0.9 9 2.7

Q: deviation. Draw a graph of this probability distribution. 2 = 2.1 Round the probability to four…

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Q: The table below shows the probability distribution of the random variable X. a. Find the mean of the…

A: Given that, X 1 2 3 P(X=x) 0.4 0.1 0.5 a. The mean of random variable is calculated as,…

Q: Let the random variable x have a normal distribution with a mean value of 70 and a variance of 25.…

A: Given data: Mean = 70 Variance = 25 To find: P (x < 80 ) = ?