A random variable X assumes values 1, 2, 3 and 4 with probabilities: 0.34, 0.18, 0.25,...
A random variable X assumes values 1, 2, 3 and 4 with
probabilities:
0.34, 0.18, 0.25, and ...? respectively.
Calculate the standard deviation of the random variable.
Answer to four decimals.
Homework Answers
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A random variable X assumes values 1, 2, 3 and 4 with
probabilities:
0.34, 0.18, 0.25,...
Question 10 2 pts The probabilities of the discrete random variable X are taking values shown...
Question 10 2 pts The probabilities of the discrete random variable X are taking values shown in the table: X 2 4 6 8 10 PIX=x) 0.18 0.31 0.34 0.10 0.07 What is the standard deviation of the distribution? (Round your answer to the third decimal place) O 2.214 0.200 6.000 O 0.121 Not enough information to answer the question O 10.000 None of the given numerical values is correct 03.162
udent Center Navigate FIU At 5 The probabilities of the discrete random variable X are taking...
udent Center Navigate FIU At 5 The probabilities of the discrete random variable X are taking values shown in the table: 6 8 10 4 2 2 Х PIX-x) 0.34 0.10 0.07 0.18 0.31 What is the standard deviation of the distribution? (Round your answer to the third decimal place) . None of the given numerical values is correct 0.121 6.000 Not enough information to answer the question ОО 10.000 2.214 0.200 3.162
Let X be a discrete random variable taking values -4, 0, 12 with probabilities: p(-4)=1/2; p(0)=1/6;...
Let X be a discrete random variable taking values -4, 0, 12 with probabilities: p(-4)=1/2; p(0)=1/6; p(12)=1/3. FindE(X), VarX and the standard deviation σx.
Suppose X is a random variable taking on possible values 1,2,3 with respective probabilities.4, .5, and...
Suppose X is a random variable taking on possible values 1,2,3 with respective probabilities.4, .5, and .1. Y is a random variable independent from X taking on possible values 2,3,4 with respective probabilities .3,.3, and 4. Use R to determine the following. a) Find the probability P(X*Y = 4) b) Find the expected value of X. c) Find the standard deviation of X. d) Find the expected value of Y. e) Find the standard deviation of Y. f) Find the...
Answer the following questions: (a) Suppose X is a uniform random variable with values 1, 2,...
Answer the following questions: (a) Suppose X is a uniform random variable with values 1, 2, 3, and 4. Then, 1) P(X = 3) = (correct to 2 decimal). 2) P(X S 3) = (correct to 2 decimal) 3) P(X > 3) = (correct to 2 decimal) 4) P(2 < X < 4) = (correct to 1 decimal) (b) Suppose Y is a random variable having Binomial distribution with parameters n = 10 and p = 0.5. Find (1) P(Y...
please help asap FS19 Statistics Class Survey: Cumulative Method A random variable X assumes values 1,...
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FS19 Statistics Class Survey: Cumulative Method A random variable X assumes values 1, 2, 3, 4, and 5 with probabilities: .17, .19, 23, .11, and ....... respectively. X: 1 2 3 4 5 Prob: .17 19 23 11.2 You are to use cumulative method to select one of these five numbers from this distribution You pick the following number by random draw from the uniform distribution on the unit interval (0, 1): 0.15 What is your observed...
X is a Discrete Random Variable that can take five values Given The five possible values...
X is a Discrete Random Variable that can take five values Given The five possible values are: x1 = 4 (Units not given) X2 = 6 (Units not given) X3 = 9 (Units not given) X4 = 12 (Units not given) X5 = 15 (Units not given) The associated probabilities are: p(x1) = 0.14 (Unitless) p(x2) = 0.11 (Unitless) p(x3) = 0.10 (Unitless) p(xx) = 0.25 (Unitless) Question(s) 1. If the five values are collectively exhaustive, what is p(x5)? (Unitless)...
For a Standard Normal random variable Z, calculate the probability P(-0.25 < Z < 0.25). For...
For a Standard Normal random variable Z, calculate the probability P(-0.25 < Z < 0.25). For a Standard Normal random variable Z, calculate the probability P(-0.32 < Z < 0.32). For a Standard Normal random variable Z, calculate the probability P(-0.43 < Z < 0.43). Calculate the z-score of the specific value x = 26 of a Normal random variable X that has mean 20 and standard deviation 4. A Normal random variable X has mean 20 and standard deviation...
Consider a random variable X, that takes values 0 and 1 with probabilities P(0) = P(1)...
Consider a random variable X, that takes values 0 and 1 with probabilities P(0) = P(1) = 0.5. Then, X = 0 with probability 0.5 and X = 1 with probability 0.5. What is the expected value of X? 0 0.25 0.5 1
Let random variable X take the values 5, 5 and 12 with respective probabilities 0.2, 0.4...
Let random variable X take the values 5, 5 and 12 with respective probabilities 0.2, 0.4 and 0.4. a.What is the expected value of X? b.What is the variance of X? c.What is the standard deviation of X?
Question 10 2 pts The probabilities of the discrete random variable X are taking values shown in the table: X 2 4 6 8 10 PIX=x) 0.18 0.31 0.34 0.10 0.07 What is the standard deviation of the distribution? (Round your answer to the third decimal place) O 2.214 0.200 6.000 O 0.121 Not enough information to answer the question O 10.000 None of the given numerical values is correct 03.162
udent Center Navigate FIU At 5 The probabilities of the discrete random variable X are taking values shown in the table: 6 8 10 4 2 2 Х PIX-x) 0.34 0.10 0.07 0.18 0.31 What is the standard deviation of the distribution? (Round your answer to the third decimal place) . None of the given numerical values is correct 0.121 6.000 Not enough information to answer the question ОО 10.000 2.214 0.200 3.162
Suppose X is a random variable taking on possible values 1,2,3 with respective probabilities.4, .5, and .1. Y is a random variable independent from X taking on possible values 2,3,4 with respective probabilities .3,.3, and 4. Use R to determine the following. a) Find the probability P(X*Y = 4) b) Find the expected value of X. c) Find the standard deviation of X. d) Find the expected value of Y. e) Find the standard deviation of Y. f) Find the...
Answer the following questions: (a) Suppose X is a uniform random variable with values 1, 2, 3, and 4. Then, 1) P(X = 3) = (correct to 2 decimal). 2) P(X S 3) = (correct to 2 decimal) 3) P(X > 3) = (correct to 2 decimal) 4) P(2 < X < 4) = (correct to 1 decimal) (b) Suppose Y is a random variable having Binomial distribution with parameters n = 10 and p = 0.5. Find (1) P(Y...
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FS19 Statistics Class Survey: Cumulative Method A random variable X assumes values 1, 2, 3, 4, and 5 with probabilities: .17, .19, 23, .11, and ....... respectively. X: 1 2 3 4 5 Prob: .17 19 23 11.2 You are to use cumulative method to select one of these five numbers from this distribution You pick the following number by random draw from the uniform distribution on the unit interval (0, 1): 0.15 What is your observed...
X is a Discrete Random Variable that can take five values Given The five possible values are: x1 = 4 (Units not given) X2 = 6 (Units not given) X3 = 9 (Units not given) X4 = 12 (Units not given) X5 = 15 (Units not given) The associated probabilities are: p(x1) = 0.14 (Unitless) p(x2) = 0.11 (Unitless) p(x3) = 0.10 (Unitless) p(xx) = 0.25 (Unitless) Question(s) 1. If the five values are collectively exhaustive, what is p(x5)? (Unitless)...
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