Homework Answers
| X | P(X) | X . P(X) |
| 0 | 0.4 | 0 |
| 1 | 0.2 | 0.2 |
| 2 | 0.2 | 0.4 |
| 5 | 0.15 | 0.75 |
| 10 | 0.05 | 0.5 |
| Total | 1 | 1.85 |
Expected value, E(X) = Ʃ[X.P(X)] =
1.85
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The probability distribution below shows the cups of wine American Adults consume every week. Find the...
1. A 7-11 convenience store orders identical bottles of wine from a wine distributor every week....
1. A 7-11 convenience store orders identical bottles of wine from a wine distributor every week. Let X be the weekly demand from customers for this wine with the following probability distribution: X = x P(X=x) 0.1 0.2 0.4 0.1 It only costs the 7-11 store $60 to order each bottle of wine but the store charges $75 to customers per bottle. How many bottles of wine should the 7-11 store order each week to maximize its expected profit? [For...
The table below shows the probability distribution for x, the number that shows up when a...
The table below shows the probability distribution for x, the number that shows up when a loaded die is rolled: X P(X) 1 0.12 2 0.10 3 0.12 4 0.14 5 0.15 6 0.37 a) Find the mean of the distribution. b) Find the standard deviation of the distribution.
Discrete Random Variable. The random variable x has the discrete probability distribution shown here: x -2...
Discrete Random Variable. The random variable x has the discrete probability distribution shown here: x -2 -1 0 1 2 p(x) 0.1 0.15 0.4 0.3 0.05 Find P(-1<=x<=1) Find P(x<2) Find the expected value (mean) of this discrete random variable. Find the variance of this discrete random variable
Can you help me with the binomial probability distribution? Please see instructions in the two images....
Can you help me with the binomial probability distribution?
Please see instructions in the two images. Thank you.
Binomial Probability Distribution 1. Explain in your own words the importance of studying the binomial probability distribution. 2. Next, the probability distribution of a random variable is presented x. 20 25 30 35 f(x) 0.38 0.10 0.15 0.37 a) What is presented in the table, is it a probability distribution? Explain. b) What is the probability that x = 35? c) What...
The random variable x has the discrete probability distribution shown here: x -2 -1 0 1...
The random variable x has the discrete probability distribution shown here: x -2 -1 0 1 2 p(x) 0.1 0.15 0.4 0.3 0.05 1) Find P(x<2) Please use up to 4 decimal places and use the proper uses of rounding. Excel can be a helpful calculator in these problems. 2) Find the expected value (mean) of this discrete random variable. Please use up to 4 decimal places and use the proper rules of rounding. Excel can be a helpful calculator...
Consider the probability distribution shown for the random variable x found below. Complete part a through...
Consider the probability distribution shown for the random variable x found below. Complete part a through f. 0 x P(x) 3 0.4 4 0.2 6 0.2 12 0.2 a. Find = E(x) = 5.6 (Round to the nearest tenth as needed.) b. Find o =E[(x-1)2]. (Round to the nearest hundredth as needed.) c. Find o. o= (Round to four decimal places as needed.) d. Interpret the value you obtained for p. Choose the correct answer below. O A. The average...
The table below shows the probability distribution of X. Find V(X), that is, the variance of...
The table below shows the probability distribution of X. Find V(X), that is, the variance of X, to three decimal places. x P(X = x) -1 0.08 2 0.1 6 0.3 10 0.52 Please help I am not sure where to begin and how to solve. This is a business analysis 2372 homework problem I got wrong and guessed on.
Suppose that 20, 000 married adults in the United States were surveyed as to the number...
Suppose that 20, 000 married adults in the United States were surveyed as to the number of children they have. The results are compiled and used as theoretical probabilities. Let X equal the number of children, with PDF as per the table below. All entries are to be decimal values accurate to the nearest 0.01 P(x) x. P(x) Collapse Al 0.15 2 0.15 3 0.3 0.2 5 0.05 0.1 a. Complete the table above. b. Determine the expected value. EX]...
Consider the probability distribution shown for the random variable x found below. Complete part a through...
Consider the probability distribution shown for the random variable x found below. Complete part a through f. x 2 3 5 11 p(x) 0.5 0.1 0.2 0.2 a. find mu = E(x) . round to the nearest tenth b. find sigma2 = E[(x - mu)2] round to the nearest hundreth c. Find sigma (found to four decimal places) d. Interpret the value you obtained for mu. Chose the correct answer. A. The average value of x over many trials will...
AP-Stats-2005-Q2 2. Let the random variable X represent the number of telephone lines in use by the technical support center of a manufacturer at noon each day. The probability distribution of X...
AP-Stats-2005-Q2 2. Let the random variable X represent the number of telephone lines in use by the technical support center of a manufacturer at noon each day. The probability distribution of X is shown in the table below P(x) 0.35 0.20 0.15 0.15 0.10 0.05 ) Suppose you come by every day at noon to see how many lines are in use. What are the chances that you don't find all 5 in use until your 7" visit? ) Find...
1. A 7-11 convenience store orders identical bottles of wine from a wine distributor every week. Let X be the weekly demand from customers for this wine with the following probability distribution: X = x P(X=x) 0.1 0.2 0.4 0.1 It only costs the 7-11 store $60 to order each bottle of wine but the store charges $75 to customers per bottle. How many bottles of wine should the 7-11 store order each week to maximize its expected profit? [For...
Can you help me with the binomial probability distribution?
Please see instructions in the two images. Thank you.
Binomial Probability Distribution 1. Explain in your own words the importance of studying the binomial probability distribution. 2. Next, the probability distribution of a random variable is presented x. 20 25 30 35 f(x) 0.38 0.10 0.15 0.37 a) What is presented in the table, is it a probability distribution? Explain. b) What is the probability that x = 35? c) What...
Consider the probability distribution shown for the random variable x found below. Complete part a through f. 0 x P(x) 3 0.4 4 0.2 6 0.2 12 0.2 a. Find = E(x) = 5.6 (Round to the nearest tenth as needed.) b. Find o =E[(x-1)2]. (Round to the nearest hundredth as needed.) c. Find o. o= (Round to four decimal places as needed.) d. Interpret the value you obtained for p. Choose the correct answer below. O A. The average...
Suppose that 20, 000 married adults in the United States were surveyed as to the number of children they have. The results are compiled and used as theoretical probabilities. Let X equal the number of children, with PDF as per the table below. All entries are to be decimal values accurate to the nearest 0.01 P(x) x. P(x) Collapse Al 0.15 2 0.15 3 0.3 0.2 5 0.05 0.1 a. Complete the table above. b. Determine the expected value. EX]...
AP-Stats-2005-Q2 2. Let the random variable X represent the number of telephone lines in use by the technical support center of a manufacturer at noon each day. The probability distribution of X is shown in the table below P(x) 0.35 0.20 0.15 0.15 0.10 0.05 ) Suppose you come by every day at noon to see how many lines are in use. What are the chances that you don't find all 5 in use until your 7" visit? ) Find...
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