Consider the following probability distribution of the random variable X. x f(x) 1 0.009 2 0.034 3 0.092 4 0.170 5 0.222 6 0.212 7 0.149 8 0.076 9 0.036   2 The variance of x is _______. a 3.276     b 3.147     c 3.023     d 2.904

Q: 5. X is a normally distributed random variable with unknown µ and an unknown variance, o². X and s²…

A:

Q: 7. 8 9. 10 11 12 13 14 From the probability distribution, find the mean and standard deviation for…

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Q: A local teacher is interested in genealogy and decides to collect data from her colleagues. Let x be…

A: Given data is x 3 4 5 6 p(x) 0.45 0.25 0.15 0.15

Q: Consider the discrete random variable X1, with probability pi X = with probability p2 X2, with…

A:

Q: 5 What is the variance of the number of requests? a 1.7900       b 1.8411       c 1.9000       d…

A: Given: x f(x) 0 0.3 1 0.38 2 0.15 3   4 0.05 5 0.03 6 0.01

Q: Let X be a random variable with probability function f(x) = 36 1 49 x² Calculate the variance of X.…

A: f(x)=

Q: The random variable X has the following probability distribution.…

A: X      1       2      3 P(X) 0.5   0.2    0.3 We select a random sample of size 2 (with…

Q: Question 6 The number of credit cards in the wallet of a randomly selected person varies from 0 to…

A: x P(x) 0 0.03 1 0.11 2 0.17 3 0.33 4 0.2 5 0.15 6 0.01 total 1

Q: The joint probability distribution of two random variables X, Y is given in the table below. Y=-3…

A: Solution-: From given joint probability distribution table of two random variables X and Y we find,…

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: Probability distribution function of discrete random variable X is given as follows. Which of the…

A: Given probability distributionThe variance of discrete random variable X is calculated using the…

Q: Find the variance for the given probability distribution. x P(x) 0 0.37 1 0.13 2 0.06 3 0.15 4 0.29…

A:

Q: Please calculate the variances, Var(X) and Var(Y), and the corresponding standard deviations for the…

A: …

Q: local teacher is interested in genealogy and decides to collect data from her co : her school know…

A: Given data, Find Variance & standard deviation?

Q: The table below shows the respective probabilities that a number of power failures will strike a…

A:

Q: The random variable X has the following probability distribution x 0 1 2 P(x) 0.2 0.6 0.2…

A: The random variable X has the following probability distribution is, x 0 1 2 P(x)…

Q: The probability distribution for the number of automobiles sold during a day (x) at Bob Iron Motors…

A: x f(x) 0 0.001 1 0.007 2 0.034 3 0.099 4 0.188 5 X 6 0.220 7 0.136 8 0.055 9…

Q: Suppose X is a random variable with the following distribution: xi 1 2 5 10 pi 0.4 0.3 0.2…

A: the expected value of X is given by the formula EX=∑ixipi substitute the values…

Q: Let X be a random variable with the following probability distribution. Question table Value   of X…

A: Probability distribution is,   x p(x) 1 0.10 2 0.60 3 0.15 4 0.10 5 0.05

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: The following table gives the probability distribution of a discrete random variable x. 1 2 3 4 5 6…

A: Given data is x 0 1 2 3 4 5 6 P(x) 0.13 0.18 0.29 0.15 0.13 0.09 0.03

Q: The table below shows the probability distribution for a discrete random variable X. X 0 1 2 4 5…

A: According to the given information in this question We need to find the value of n and expected…

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: Let X be a random variable with a mean of 20 and variance of 4. Then E(3X2 -3 X +2) is O a. -46 O b.…

A: Answer is  (b) 1154