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Three tables listed below show random variables and their probabilities. However, only one of these is...
Three tables listed below show random variables and their probabilities. However, only one of these is...
Three tables listed below show random variables and their probabilities. However, only one of these is actually a probability distribution. A B C x P(x) x P(x) x P(x) 25 0.2 25 0.2 25 0.2 50 0.4 50 0.4 50 0.4 75 0.1 75 0.1 75 0.1 100 0.3 100 0.5 100 0.7 a. Which of the above tables is a probability distribution? b. Using the correct probability distribution, find the probability that x is: (Round the final answers to...
Three tables listed below show random variables and their probabilities. However, only one of these is actually a probability distribution. A B C x P(x) x P(x) x P(x) 25 0.6 25 0.6 25 0.6 50 0.1 50
Three tables listed below show random variables and their probabilities. However, only one of these is actually a probability distribution. ABCxP(x)xP(x)xP(x)25 0.6 25 0.6 25 0.6 50 0.1 50 0.1 50 0.1 75 0.1 75 0.1 75 0.1 100 0.4 100 0.2 100 0.6 a. Which of the above tables is a probability distribution? (Click to select) B A C b. Using the correct probability distribution, find the probability that x is: (Round the final answers to 1 decimal place.) 1. Exactly 50 = 2. No more than 50 = 3. More than 25 = c. Compute the mean, variance, and standard deviation of this distribution. (Round the final answers to 2 decimal places.) 1. Mean µ 2. Variance σ2 3. Standard deviation σ
2. (-13 Points) DETAILS TANFIN12 8.3.002. The probability distribution of a random variable x is given....
2. (-13 Points) DETAILS TANFIN12 8.3.002. The probability distribution of a random variable x is given. MY NOTES 12 -2 0 2 4 PCX = ) 0.3 0.1 0.2 0.2 0.2 Compute the mean, variance, and standard deviation of X. (Round your answers to two decimal places.) mean variance standard deviation The probability distribution of a random variable X is given. 1 View 2 3 4 P(X = x) 0.3 0.4 0.2 0.1 Compute the mean, variance, and standard deviation...
Suppose that a random sample of size 64 is to be selected from a population with mean 40 and standard deviation 5.
Suppose that a random sample of size 64 is to be selected from a population with mean 40 and standard deviation 5. (a) What are the mean and standard deviation of the sampling distribution? (b) What is the approximate probability that will be within 0.3 of the population mean u? (Round your answer to four decimal places.) (c) What is the approximate probability that will differ from u by more than 0.7? (Round your answer to four decimal places.)
Please answer the three questions below: 1) 2) 3.) Below is a binomial distribution for n-7...
Please answer the three questions below:
1)
2)
3.)
Below is a binomial distribution for n-7 and p 0.4. 0.25 0.2 0.15 0.1 0.05 Number of Successes Binomial Distribution Calculate the mean of the binomial distribution. Preview [two decimal accuracy] Below is a binomial distribution for n 6 and p 0.6 0.3 0.25 0.2 S0.15 0.1 0.05 Number of Successes Binomial Distribution Calculate the standard deviation of the binomial distribution. Preview [three decimal accuracy 0.35 0.3 0.25 0.2 0.15 0.1...
The following table contains the historic returns from large stocks and long-term Treasury bonds ...
The following table contains the historic returns from large stocks and long-term Treasury bonds over the last 20 years. Analyze the risk-return trade-off that would have characterized these portfolios. Year Stoc 1997 31.33 24.27 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 24.89 -10.82 -11.00 -21.28 31.76 11.89 6.17 15.37 5.50 -36.92 29.15 17.80 1.01 16.07 35.18 11.37 11.312 13.094 -8.4734 14.4891 4-0302 14.6641 1.2778 5.1862 3.1030 2.2713 -6431 17.6664 5.8278 7.4457 16.6015 3.5862 -6.9025 10.1512...
Engineering Economic 10% interest rate The probability mass functions of the initial investment and useful life...
Engineering Economic
10% interest rate
The probability mass functions of the initial investment and useful life of a system are given below. The system earns an annual revenue of $2000. Find the mean, variance and standard deviation of the probability distribution of the present worth of the system. Initial investment Value Probability $5000 0.2 $6000 0.3 $7000 0.4 $8000 0.1 Useful life (in years) Value Probability 6 0.3 7 0.6 9 0.1
please answer both questions Question 5 of 17 (1 point) View problem in a pop-Up Approximately...
please answer both questions
Question 5 of 17 (1 point) View problem in a pop-Up Approximately 10.8% of American high school students drop out of school before graduation. Assume the variable is binomial. Choose 18 students entering high school at random. Find these probabilities. Round intermediate calculations and final answers to three decimal places. Source: www.infoplease.com Part 1 No more than three drop out P(no more than three drop out)-0.878 Part 2 All 18 stay in school and graduate P(all...
If x is a binomial random variable, use the binomial probability table to find the probabilities...
If x is a binomial random variable, use the binomial probability table to find the probabilities below. a.. P(x=2) for n=10, p=0.4 b.. P(x≤6) for n=15, p=0.3 c.. P(x>1) for n=5, p=0.1 d.. P(x<17) for n=25, p=0.9 e.. P(x≥6) for n=20, p=0.6 f.f. P(x=2) for n=20, p=0.2 a. P(x=2)=_______________-(Round to three decimal places as needed.)
Below is a graph of a normal distribution with mean -4 and standard deviation o 3....
Below is a graph of a normal distribution with mean -4 and standard deviation o 3. The shaded region represents the probability of obtaining a value from this distribution that is less than 5.5. 0.4 0.3 0.2 0.1- - 5.5 -4 Shade the corresponding region under the standard normal density curve below 0.4 ? 0.3 0.2 0.1
2. (-13 Points) DETAILS TANFIN12 8.3.002. The probability distribution of a random variable x is given. MY NOTES 12 -2 0 2 4 PCX = ) 0.3 0.1 0.2 0.2 0.2 Compute the mean, variance, and standard deviation of X. (Round your answers to two decimal places.) mean variance standard deviation The probability distribution of a random variable X is given. 1 View 2 3 4 P(X = x) 0.3 0.4 0.2 0.1 Compute the mean, variance, and standard deviation...
Please answer the three questions below:
1)
2)
3.)
Below is a binomial distribution for n-7 and p 0.4. 0.25 0.2 0.15 0.1 0.05 Number of Successes Binomial Distribution Calculate the mean of the binomial distribution. Preview [two decimal accuracy] Below is a binomial distribution for n 6 and p 0.6 0.3 0.25 0.2 S0.15 0.1 0.05 Number of Successes Binomial Distribution Calculate the standard deviation of the binomial distribution. Preview [three decimal accuracy 0.35 0.3 0.25 0.2 0.15 0.1...
The following table contains the historic returns from large stocks and long-term Treasury bonds over the last 20 years. Analyze the risk-return trade-off that would have characterized these portfolios. Year Stoc 1997 31.33 24.27 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 24.89 -10.82 -11.00 -21.28 31.76 11.89 6.17 15.37 5.50 -36.92 29.15 17.80 1.01 16.07 35.18 11.37 11.312 13.094 -8.4734 14.4891 4-0302 14.6641 1.2778 5.1862 3.1030 2.2713 -6431 17.6664 5.8278 7.4457 16.6015 3.5862 -6.9025 10.1512...
Engineering Economic
10% interest rate
The probability mass functions of the initial investment and useful life of a system are given below. The system earns an annual revenue of $2000. Find the mean, variance and standard deviation of the probability distribution of the present worth of the system. Initial investment Value Probability $5000 0.2 $6000 0.3 $7000 0.4 $8000 0.1 Useful life (in years) Value Probability 6 0.3 7 0.6 9 0.1
please answer both questions
Question 5 of 17 (1 point) View problem in a pop-Up Approximately 10.8% of American high school students drop out of school before graduation. Assume the variable is binomial. Choose 18 students entering high school at random. Find these probabilities. Round intermediate calculations and final answers to three decimal places. Source: www.infoplease.com Part 1 No more than three drop out P(no more than three drop out)-0.878 Part 2 All 18 stay in school and graduate P(all...
Below is a graph of a normal distribution with mean -4 and standard deviation o 3. The shaded region represents the probability of obtaining a value from this distribution that is less than 5.5. 0.4 0.3 0.2 0.1- - 5.5 -4 Shade the corresponding region under the standard normal density curve below 0.4 ? 0.3 0.2 0.1
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