# A store owner receives 12 computers:nine are model A and the rest are model B.if two computers are sold at random,find the probability that one of each model is sold. (base on probability and combinatorial analysis)

190,818 results

1. ### math

A store owner receives 12 computers:nine are model A and the rest are model B.if two computers are sold at random,find the probability that one of each model is sold. (base on probability and combinatorial analysis)
2. ### statistics

A store owner receives 12 computers:nine are model A and the rest are model B.if two computers are sold at random,find the probability that one of each model is sold.
3. ### math

A store owner receives 12 computers:nine are model A and the rest are model B.if two computers are sold at random,find the probability that one of each model is sold
4. ### Math

I need help in seeing if I solved these inequality problems correctly. 1. A store sells two models of computers. Because of the demand, the store stocks at least twice as many units of model A as of model B. The costs to the store for the two models are \$800 and \$1200, ...
5. ### algebra 2

three computers were on sale model E computer was priced at 1/3 the price model C and model P was priced at 1/2 the price of model E on business bought one of each type of computers on sale and paid a total \$1800
6. ### probability

2.The daily production from a car factory=3 different models-A,B,C which are in two different colours-R and S. Daily the factory produces 1600 model A cars,800 of model B and 600 of model C. Overall,40% of the cars are of colour R,60% of colour S.60% of of the model A cars are...
7. ### Statistics

A manufacturer makes two models of an item: model I, which accounts for 80% of unit sales, and model II which accounts for 20% of unit sales. Because of defects, the manufacturer has to replace (or exchange) 10% of its model I and 18% of model II. If a model is selected at ...
8. ### math

A retailer planned to buy some computers form a wholesaler for a total of Shillings 1,800,000. Before the retailer could buy the computers the price per unit was reduced by shillings 4,000. This reduction in price enabled the retailer to buy five more computers using the same ...
9. ### math

A retailer planned to buy some computers form a wholesaler for a total of Shillings 1,800,000. Before the retailer could buy the computers the price per unit was reduced by shillings 4,000. This reduction in price enabled the retailer to buy five more computers using the same ...
10. ### math

A retailer planned to buy some computers form a wholesaler for a total of shilling 1,800,000. Before the retailer could buy the computers the price per unit was reduced by shilling 4,000. This reduction in price enabled the retailer to buy five more computers using the same ...
11. ### Statistics

A manufacturer makes two models of an item: model I, which accounts for 80% of unit sales, and model II, which accounts for 20% of unit sales. Because of defects, the manufacturer has to replace (or exchange) 10% of its model I and 18% of its model II. If a model is selected ...
12. ### math

Julius sold 5x as many computers as Sam sold last year. In total they sold 78 computers. How many computers did Julius sell. **Solve each problem by WRIING and solving the equation.
13. ### math

CountingOutcomes and Theoretical Probability A computer store sells 4 models of computer (m1,m2,m3 m4. Each model can be fitted with 3 sizes of hard drive (A,B,C,) 1- Find the sample space. 2- What is the probability of choosing a model with a size C hard drive? 3- What is the...
14. ### math

The sales team at an electronics store sold 48 computers last month. The manager at the store wants to encourage the sales team to sell more computers and is going to give all the sales team members a bonus if the number of computers sold increases by 30% in the next month. ...
15. ### Pre-Calculus

The logistic growth model p(t)=0.90/1+3.5e^-0.339t relates the proportion of new personal computers sold @ Best Buy that have Intel's latest coprecessor t months after it has been introduced. a) what proportion of new personal computers sold @ Best Buy will have Intel's latest...
16. ### statistics

A manufacturer makes two models of an item: model A which accounts for 70% of unit sales, and model B which accounts for 30% of unit sales. Because of defects, the manufacturer has to replace (or exchange) 4% of its model A and 17% of its model B. Question 9 : If a unit is ...
17. ### Math

Mrs. Roberts plans to purchase a microscope for a present as a Christmas gift. The A model magnifies to a maximum of 5 x10 2 power , while the b model magnifies to a maximum of 3x10 3 power times. Which of the following statements is true? 1. The b model is 6 times stronger ...
18. ### Algebra2

The first candle was sold at 10\$ and the store sold 2500 of them. Then they decreased to 9.50\$ and sold 2800, they decreased more to 9\$ and sold 3100. Find a quadratic formula that will model the profit from this based on price change. What selling price would maximize the ...
19. ### Algerbra

Mark has made a clay model. He will now make a clay statue that is mathematically similar to the clay model. The model has a base area if 6cm^2. The statue will have a base area of 253.5cm^2. Mark used 2kg of clay to make the model. Clay is sold in 10kg bags. Mark has to but ...
20. ### statistics

A certain type of dvd player is sold at just two stores. 30% of sales are from store A and 70% of sales are from store B. 2.7% of the dvd players sold at store A are defective while 3.7% of the dvd players sold at store B are defective. If Kate receives one of these dvd ...
21. ### Chemistry

which atomic model best explains the helium atom? A. Bohr's Model B. Dalton's Model c. Quantum mechanical model D. Thompson Model Not really sure what this question is asking.
22. ### Probability

1.John puts the letters of the word FOOTFEST in 8 different envelopes. Paul chooses an envelope at random. (a)(i)Calculate the probability that Paul chooses an envelope containg letter O (1/8 ?) (ii)Calculate the probability tthat Paul doesn't chooses an envelope(5/8?) ...
23. ### Probability

1.John puts the letters of the word FOOTFEST in 8 different envelopes. Paul chooses an envelope at random. (a)(i)Calculate the probability that Paul chooses an envelope containg letter O (1/8 ?) (ii)Calculate the probability tthat Paul doesn't chooses an envelope(5/8?) ...
24. ### statistics and probability

A shipment of 20 computers contains 4 defective machines.Two computers are selected at random without replacement and tested for being detective. (a). is this a binomial experiment? why or why not solution. Yes. because each trial can result in just two possible outcomes. (b...
25. ### .MATH.

If about 3000 of every recall model of a vehicle actually need rework, what is the probability that your (recalled) car will not need a rework if there are 120000 cars of that model sold, and if 1000 of them are already off the road (this is a monkey wrench!). State your ...
26. ### Math

If about 3000 of every recall model of a vehicle actually need rework, what is the probability that your (recalled) car will not need a rework if there are 120000 cars of that model sold, and if 1000 of them are already off the road (this is a monkey wrench!). State your ...
27. ### Math

The depth of the first model of a mobile phone measure 7/20 of an inch. The second model is 6/7 Was the depth of the first model. The third model measured 27/35 of the size of the first model. The fourth model was 4/5 the size of the first model. What is the size of each model...
28. ### math

change both measurements to the same unit of measure,and find the scale factor. 1. 4in. model of a 6ft.cabinet 2. 4cm. model of a 2m. door. 3. 12ft. model of a 100yd. playground 4. 20m. model of a 3km. street.
29. ### Math

5) A car manufacturer has manufacturing plants in 3 major cities. Below are the daily amounts of cars produced per plant for 3 different model types. (matrix A) Model X Model Y Model Z Plant A 12 10 0 Plant B 4 4 20 Plant C 8 9 12 Due to wage increases, the April profits are ...
30. ### math

the ratio of the number of desktop computers sold to the number of laptops sold by a dealer is 5 to 9 if 20 desktop computers were sold then how many laptops wree sold?
31. ### Math!

Change both measurements to the same unit of measure and find the scale factor. 1) 1ft model of a 1in. fossil 2) 20cm model of a 28m rocket 3) 2ft model of a 30yd sports field 4) 3ft model of a 5yd whale
32. ### I NEED HELP WITH THIS. PLZ

Lesson 2:3-D Views Unit 2: Measurement Multiple Choice For questions 1-3, use the following model. 1. How many cubes are in the base of the model? (1 point) A. 3 B. 4 C. 7 D. 2 2.How many cubes would be shown in the right view of the model? (1 point) A. 3 B. 6 C. 7 D. 4 4. ...
33. ### math

Uncle Toby is making a scale model of the battlefield at Fredericksburg. The area he wants to model measures about 11 mi by 7.5 mi. He plans to put the model on a 3.25 ft by 3.25 square table. On each side of the model he wants to leave at least 3 inches between the model and ...
34. ### Math

Salim sells fax machines that come in Standard and Enhanced models. The Standard model sells for \$325 and the Enhanced model sells for \$385. If Salim sold a total of 35 units and took in \$12,575, how many of the Enhanced model did he sell?
35. ### math

The sale of lawn mowers t years after a particular model is introduced is given by the function y=5500 ln(9t+4), where y is the number of mowers sold. Hoe many mowers will be sold 2 years after a model is introduced? Round the answer to the nearest whole number.
36. ### algebra II,math

this is another from a different section can you show me how to solve it. An electronics company produces three models of stereo speakers, models A, B, and C, and can deliver them by truck, van, or station wagon. A truck holds 2 boxes of model A, 2 of model B, and 3 of model C...
37. ### math

Toby is making a scale model of the battlefield at Fredericksburg. The area he wants to model measures about 11 mi by 7.5mi. He plans to put the model on a 3.25 ft by 3.25ft square table. On each side of the model he wants to leave at least 3 inches between the model and the ...
38. ### Algebra

Company produces three models of speakers. models A,B,and C and can deliver them by truck, van and car. Truck holds 2 boxes of model A, 2 of model B and 3 of model C. Van holds 3 boxes of model A, 4 boxes of model B, and 2 boxes of model C The car holds 3 boxes of model A 5 ...
39. ### Math

Mr. Jackson sold 3 computers in the first year. In the second year he sold 4 times as many computers. In the third year he was able to sell 6 times as many computers as the first year. How many did Mr. Jackson see in three years.
40. ### math

Toby is making a scale model of the battlefield at Fredericksburg. The area he wants to model measures about 11 mi by 7.5mi. He plans to put the model on a 3.25 ft by 3.25ft square table. On each side of the model he wants to leave at least 3 inches between the model and the ...
41. ### Math

a simple Model (model 1)of distance,d meters,fallen in time t seconds by free-fall skydiver is d(t)=4.9t^2 a. sketch the model b. a different model (model 2) for the distance travelled by a skydiver is d(t)=4.9t^2-0.1t^2.sketch a graph of this function
42. ### Math

Theresa's company just bought 18 new computers. She was told that there would be a random drawing to see which employees got one of the new computers. If Theresa has 46 coworkers, what is the probability that she will get one of the new computers?
43. ### social studies-theories in lanugage

I don't understand the origins of contemporary American African English...I know that there is the dialectologists model the creolists model and the integrated model but i don't get what each one is
44. ### statistics

I'm trying to work through the proof for SST = SSM + SSE MEAN = ∑(X)/N SST = ∑((x - MEAN)^2) = ∑(x^2 - 2 * x1 * MEAN + MEAN^2) = ∑(x^2) - 2 * MEAN * ∑(x) + N * MEAN^2 = ∑(x^2) - 2 * ∑(x)^2/N + ∑(x)^2/N = ∑(x^2) - ∑(x...
45. ### Math 1324

A manufacturer produces two models of elliptical cross-training exercise machines. The times for assembling, finishing, and packaging model A are 3 hours, 3 hours, and 0.8 hour, respectively. The times for model B are 4 hours, 2.5 hours, and 0.4 hour. The total times available...
46. ### stats

shipment of 30 computers, 8 are defective. Four computers are chosen at random. Find the probability that: a)Exactly two are defective b)None are defective c)At most two are defective
47. ### Math

Several models of a rectangular cabin are being studied the perimeter of each model is 26 inches the length of one model is 8 inches what is the width of the model
48. ### Math-Statistics

Assume that 60% of community college students are female. 1) If we pick 10 students at random justify why we can or cannot model this using a normal model. 2) Find the probability that 8 of the 10 students selected are female. 3) Find the probability that 8 of more of the 10 ...
49. ### math

Use 17 connecting cubes to make a kitchen model. Model is is the shape of rectangle and is one cube high. How many different ways to make the model?
50. ### Math

The wingspan of a Boeing 747-400 is 64.4 metres. a. If a scale model is built to the scale 1:20, what would the wingspan of the model be in centimetres? b. If the wingspan of another model is 53 cm, find the scale of the model in the form 1:x.
51. ### algebra 2

A garden supply store sells two types of lawn mowers. The cashiers kept a tally chart for the total number of mowers sold. They tallied 30 mowers sold. Total sales of mowers for the year were \$8379.70. The small mowers cost \$249.99 and the large mowers cost \$329.99. Find the ...
52. ### algebra 2

A garden supply store sells two types of lawn mowers. The cashiers kept a tally chart for the total number of mowers sold. They tallied 30 mowers sold. Total sales of mowers for the year were \$8379.70. The small mowers cost \$249.99 and the large mowers cost \$329.99. Find the ...
53. ### Finite Math

Kane Manufacturing has a division that produces two models of hibachis, model A and model B. To produce each model-A hibachi requires 3 lb of cast iron and 6 min of labor. To produce each model-B hibachi requires 4 lb of cast iron and 3 min of labor. The profit for each model-...
54. ### Finite

Kane Manufacturing has a division that produces two models of hibachis, model A and model B. To produce each model-A hibachi requires 3 lb of cast iron and 6 min of labor. To produce each model-B hibachi requires 4 lb of cast iron and 3 min of labor. The profit for each model-...
55. ### Science!

Ernest Rutherford's atomic model included a nucleus comprised of positive particles called protons. Later, James Chadwick discovered neutrons. How did Chadwick's discovery change the atomic model? A. The new model showed a negatively charged nucleus. B. The new model showed a ...
56. ### Math

Please Help! The number of cars sold weekly by a new automobile dealership grows according to a linear growth model. The first week the dealership sold five cars (P0=5 ). The second week the dealership sold cars (P1=12 Pn = Pn−1+7 12-5=7 Pn=5+7n If this trend continues, how ...
57. ### Math probability

Assume that 60% of community college students are female. 1) if we pick 100 students at random justify why we can or cannot model this using a normal model. 2) find the probability that between 50 and 70 of the 100 students selected are female. 3) fidn Q1 and Q3 for the middle...
58. ### finite

Kane Manufacturing has a division that produces two models of hibachis, model A and model B. To produce each model A hibachi requires 6 lb of cast iron and 12 min of labor. To produce each model B hibachi requires 7 lb of cast iron and 6 min of labor. The profit for each model...
59. ### Technology

12. A clay model of a new automobile design would be considered a a. wireframe model b. surface model c. mock-up d. prototype C
60. ### statistics

A convenience store owner believes that the median number of lottery tickets sold per day is 49. A random sample of 20 days yields the data below. Find the critical value to test the owner's claim. 32 48 59 64 31 55 70 27 33 38 47 54 54 44 44 49 49 59 54 38
61. ### Probability

A store sells two types of tables: plain and deluxe. When a customer buys a table, there is an 80% chance that it will be a plain table. Assume that whether or not the type of table that one customer buys is independent of the types of the tables that any other customer buys. ...
62. ### statistics

à manufacturer of computers designed to aid social scientists in analyzing research data clams that his computers are opérational for at least 80 percent of the time. during the course of the year one computer was operational for 270 days. test, 1 percent confidence level, ...
63. ### finite math

Kane Manufacturing has a division that produces two models of hibachis, model A and model B. To produce each model-A hibachi requires 3 lb of cast iron and 6 min of labor. To produce each model-B hibachi requires 4 lb of cast iron and 3 min of labor. The profit for each model-...
64. ### Science

What are the advantages and disadvantages of Mathematical model - disadvantage: it often cannot account for all possible factors Advantage to a mathematical model is it can be applied to categories of any size and can predict complex events Physical Model - Disadvantage: they ...
65. ### Math

Im having trouble getting the correct answer to this question. Could someone help out. Monthly sales of a particular personal computer are expected to decline at the following rate of S'(t) computers per month, where t is time in months and S(t) is the number of computers sold...
66. ### Political Science

Is the rational-comprehensive model or the incremental model best used to describe policymaking in the United States? Provide examples to support your model choice
67. ### science

describe the difference between a ball-and-stck model and a space-filling model of a compound ? Vanessa--Have you seen a ball-and-stick model and a space-filling model? If so you will know how to answer this. dont give me stupid answers i can on for help not bs
68. ### Geometry

Max is building a spherical model of earth. He is building his model using 2-inch long pieces of wood to construct the radius. The first time he tries to build the model, he uses 3 of the 2-inch pieces of wood end-to-end to make the radius of the model. A.) What is the volume ...
69. ### Calculus

Find the sum of the squared errors for the linear model f(x) and the quadratic model g(x) using the given points. f(x) = −0.7x+3, g(x)=0.06x^2−0.6x+2 (−3, 5), (−1, 3), (1, 2), (3, 1) linear model-? quadratic model -?
70. ### math

Cashew nuts are sold at \$15.00/kg. Walnuts are sold at \$12.00/kg. What quantities of each nut would a store owner put into a 100-kg barrel so that it could be sold for \$13.20/kg? ---------------- 15.00c+12.00w= 31.20 C+w= 100 Are these equations right?
71. ### math

A store sells one model of bicycle for \$250. a. Write an expression for the amount of money the store receives if it sells b bicycles. b. How much would the store make if it sells 5 bicycles.
72. ### physical science

Which one of these statements is true about Copernicus? a. His model included planetary orbits that were circular. b. He believed that Ptolemy's ideas about the shape of orbits were correct c. His model could not account for retrograde motion of Mars. d. His model of the ...
73. ### statistics

A consumer magazine has contacted a simple random sample of 33 owners of a certain model of automobile and asked each owner how many defects had to be corrected with in the first 2 months of ownership. The average number of defects was x with (with line over the x)=3.7, with a...
74. ### College algebra

Suppose that a sales person observes that if an item is priced at \$3 per item then 11 items are sold. If 9 items are sold for \$5 per item then find a liner equation to model the number y of items sold for x dollars per item. Find the slope intercept form of the equation of the...
75. ### psychology

When an individual feels that both health and illness are a product of psychological, biological, and social forces he or she believes in the - Biomedical model - Western Perspective Model - Biopsychosocial model - Scientific approach to medicine - Primary medicine perspective...
76. ### Math

Here's another problem The number of homes sold is growing according to a linear growth model. The first week 4 homes were sold (P0=4) The second week a total of 10 homes were sold. (P1=10) n=0-1st week po=4 p1=10 d=6 n=1-2nd week d=p1-p0=10-4=6 Write the recursive Formula for...
77. ### Calculus

Find the sum of the squared errors for the linear model f(x) and the quadratic model g(x) using the given points. f(x) = 2.0x − 3, g(x) = 0.09x^2 + 1.6x − 3 (−1, −4), (1, −2), (2, 0), (4, 6), (6, 9) linear model-? quadratic model- ?
78. ### Finite Math

Kane Manufacturing has a division that produces two models of hibachis, model A and model B. To produce each model-A hibachi requires 3 lb of cast iron and 6 min of labor. To produce each model-B hibachi requires 4 lb of cast iron and 3 min of labor. The profit for each model-...
79. ### Math 10

Cashew nuts are sold at 15 per kg. Walnuts are sold at 12 per kg. What quantities of each nut would a store owner put into a 100-kg barrel so that it could be sold for 13.20 per kg?
80. ### CJS230

Can someone please assit me with finding a website to answer the folloing questions? Based on the ideals of a penitentiary, what should it be like? What was the principal goal of a penitentiary? What were the differences between the two prison models? What were the benefits ...

Craig is making a model version of his neighborhood that uses model trains. The ratio of the model train to the actual train is 1:64. His neighborhood covers an area o 200,704 squared feet. What will the area of the model neighborhood be?
82. ### Finite

Kane Manufacturing has a division that produces two models of hibachis, model A and model B. To produce each model A hibachi requires 3 lb of cast iron and 6 min of labor. To produce each model B hibachi requires 4 lb of cast iron and 3 min of labor. The profit for each model ...
83. ### Math

Tropical Pools sells an aboveground model for p dllars each. The monthly revenue for this model is given by the formula R(p)+ -0.08p^2 + 300p. Revenue is the produce of the price p and the demand(quality sold). a0 Factor out the price on the right-hand side of the forula b) ...

the heckscher- ohlin model question is below.. can anyone explain this question..? The Heckscher-Ohlin model assumes that tastes are the same in Home and Foreign. Suppose now that tastes are different in Home and Foreign. Is it possible for the capital intensive country to now...
85. ### Chem 1

In this website, winter.group.shef.ac.uk/vsepr/isomers.html Does model (A) have the most interactions... leaving model C to least reactions? The way I read it is that model C has the most interactions and model A has the least (overall); therefore, the lone pairs go into ...
86. ### College algebra

Assume that the situation described can be modeled by a linear equation. Use the given information to find the y=mx+b form of the equation of the line. Suppose that a sales person observes that if an item is priced at \$4 per item then 11 items are sold. If 9 items are sold for...
87. ### Physical Science

I need some help. I have tried working this problem and can't get it. A class is building a scale model of the planets based on the model of Mercury having a radius 0.5cm. What is the diameter of Saturn for this model?
88. ### Probability and Statistics

Sixty percent of a particular model of car are silver. What is the probability that in the next 10 observations of this model you observe 5 silver cars?
89. ### science help

What would happen to the current model of the atom if new information about its structure is discovered in the future? A. The current atomic model would be revised. B. The current atomic model would be strengthened. C. The current atomic model would be proven. D. The current ...
90. ### Math

Emily wants to make a rectangular model with a height of one connecting cube. She wants to make the model in exactly 2 different ways. How many connecting cubes could Emily use to make the model in only two ways
91. ### Science

A hurricane becomes more powerful be evaporating water from? lakes mountains oceans*** rivers 1. Over time, scientists have changed their model of our solar system. It has transitioned from A) a sun-centered to an moon-centered model. B) a sun-centered to an earth-centered ...
92. ### earth

why was Copernicus model accepted over the geocentric model, even when it did not predict stellar event any better than the geocentric model
93. ### The Graphical Method

A manufacturer produces two models of mountain bikes. Model A requires 5 hours of assembly time and 2 hours of painting time, and Model B requires 4 hours of assembly time and 3 hours of painting time. The maximum total weekly hours available in the assembly department and the...
94. ### Algebra 1

An architectural firm makes a model of a science center they are building. The ratio of the model to the actual size is 1 in.:85 ft. Estimate the height of the building if the model is 1.5 inches tall.
95. ### Science

1. How is a model of an atom different from a real atom? A. A model of an atom is not as big as an actual atom. B. A model of an atom is the same as a real atom. C. A model of an atom is more complex than a real atom. D. A model of an atom is not as small as an actual atom. I ...
96. ### chemistry

1) what flaws exsit in Dalton's model of the atom? 2) what flaws exist in Thompson's plum pudding model of the atom? 3) what flaws exist in Rutherford's model of the atom? 4) what flaws in Bohr's model of the atom? 5) do any flaws exist in the modern quantum model of the atom...
97. ### statistics

A sudent is analyzing data from an experiment using a linear model. when the student entered the data into his calculator and ran a least squares linear regression the calculator gave a correlation coefficient of 0.01. what can the student infer from this coefficient? 1. the ...
98. ### math gre ques

A sudent is analyzing data from an experiment using a linear model. when the student entered the data into his calculator and ran a least squares linear regression the calculator gave a correlation coefficient of 0.01. what can the student infer from this coefficient? a. the ...
99. ### Quanitive Methods

A car rental company has \$540,000 to purchase up to 25 new cars of two different models. One model costs \$18,000 each and the other model costs \$24,000 each. Write a system of linear inequalities to describe the situation. Let x represent the first model and y represent the ...
100. ### Math

The Table shows some common scales used in a model railroading.For each scale,find the length of a model of an 82-foot long boxcar.Give the length of each model in inches. Scale Name/Scale N 1:160, S 1:64, O 1:48