A Lights-A-Lot quality inspector examines a sample of 25 strings of lights and finds that 6 are defective. a. What is the experimental probability that a string of lights is defective? b. What is the best prediction of the number

20,043 results
  1. math

    Ms. Tucker travels through two intersections with traffic lights as she drives to the market. The traffic lights operate independently. The probability that both lights will be red when she reaches them is .22. the probability that the first light will be

  2. MATH

    One light flashes every 2 minutes and another light flashes every 3.5 minutes. Suppose both lights flash together at noon. What is the first time after 1 PM that both lights will flash together ?

  3. math

    Marley drives to work every day and passes two independently operated traffic lights. The probability that both lights are red is 0.35. The probability that the first light is red is 0.48. What is the probability that the second light is red, given that

  4. Maths

    An aeroplane is flying horizontally directly towards the city at an altitude of 400 metres. At a given time the pilot views the city lights of Melbourne at an angle of depression of 1.5 degrees. Two minutes later the angle of depression of the city lights

  5. Science

    One light bulb in a string of lights goes out. This causes all the other lights in the string to also go out. This is an example of a?? 1) resistor 2)parallel circuit 3)closed circuit 4)series circuit I think #4. Thanks in advance for your help.

  6. math

    A string of decorative lights is 28 feet long. The first light on the string is 16 inches from the plug. If the lights on the string are spaced 4 inches apart, how many lights are there on the string?

  7. Language arts

    Which detail is relevant for an argument to make drivers who run through red lights pay a fee A. Even though everyone knows that going through red lights is illegal they do it anyway B. The current fines which are being used to maintain roads are

  8. maTH

    1. You mix the letters S, E, M, I, T, R, O, P, I, C, A, and L thoroughly. Without looking, you draw one letter. Find the probability that you select a vowel. Write your answer as a fraction in simplest form. (1 point) 2. Suppose you spin the spinner once.

  9. physics

    Two strings of tree lights, each with a resistance of 200 Ω, are connected together in series. What is their combined resistance?

  10. MATH HELP

    A Lights-A-Lot quality inspector examines a sample of 25 strings of lights and finds that 6 are defective. a. What is the experimental probability that a string of lights is defective? b. What is the best prediction of the number of defective strings of

  11. statistics

    The Acme Car Company claims that at most 8% of its new cars have a manufacturing defect. A quality control inspector randomly selects 300 new cars and finds that 33 have a defect. Should she reject the 8% claim? Assume that the significance level is 0.05.

  12. math urgent

    1. You mix the letters S, E, M, I, T, R, O, P, I, C, A, and L thoroughly. Without looking, you draw one letter. Find the probability that you select a vowel. Write your answer as a fraction in simplest form. (1 point) 2. Suppose you spin the spinner once.

  13. Math

    Three lighthouses on three nearby islands flash their lights every evening. On one island, the light flashes every 45 seconds. The lighthouse on the second island flashes every 2 minutes. The third lighthouse flahses a light every 1 and 1/4 minutes.

  14. Maths

    A string of decorative lights is 28 ft long the first light on the string is 16 inches from the plug if the lights on the string are spaced 4 inches apart how many lights are there on the string

  15. math

    please answers these ?? 9. For school, Joey wants to make spirit ribbons that are each 6 3/4 inches in length. He has a piece of ribbon that is 97 inches in length. What is the greatest number of spirit ribbons Joey can make from the piece of ribbon? A.8

  16. physics

    A string of 8 christmas tree lights connected in series to a 120v source draws a current of 0.75A.can any one show me how to find the resistance of each lights and potential differnces.

  17. english

    i was just wondering does this song lyric have a metaphor? The stars will cry The blackest tears tonight And this is the moment that I live for I can smell the ocean air And here I am Pouring my heart onto these rooftops Just a ghost to the world That's

  18. math

    The number of streetlights in a town is growing linearly. Four months ago (n = 0) there were 130 lights. Now (n = 4) there are 146 lights. If this trend continues, a. Find an explicit formula for the number of lights in month n b. How many months will it

  19. Physical Sci

    An incandescent light bulb produces light when electrons flow through the (1 point) * air. * glass. * filament. * vacuum. 2. Many streets and parking lots are illuminated with (1 point) * laser lights. * tungsten-halogen lights. * sodium-vapor lights. *

  20. Math

    The Lifetimes of a certain brand of photographic light are normally distributed with the mean of 210 h and a standard deviation of 50 h. What percent of lights will need to be replaced within 233 h? Out of 2000 lights, how many will have a lifetime between

  21. math

    Sam in placing rope lights around the edge of a circular patio with a diameter of 18 feet. The lights come in lengths of 54 inches. How many strands of lights does he need to surround the patio edge?

  22. physics

    To combat wasteful habits, we often speak of “conserving energy,” by which we mean turning off lights and hot energy,” by which we mean turning off lights and hot water when they are not being used, and keeping thermostats at a moderate level. In

  23. Physics

    The fact that the lights don't get dimmer when you turn on another one is evidence that the lights are wired in parallel. Explain.

  24. Math

    Two lights flash every 15 and 45 seconds respectively.If the two lights flashed together at 3 p.m.,at what time will they flash together next time?

  25. Chemistry

    I have an assignment to 'Research ionization energy levels and come up with 3 real world applications' and was told to look up lasers, plasma arcs and neon lights. Hours later, (lol) I'm still having a little trouble. Is there any way someone can explain

  26. Physics

    #1. Ten Christmas lights are connected in series and plugged into a 120 V wall outlet. Each light is identical and can be thought of as a resistor. a) What should the value of this resistance be if the total string is to dissipate 50 W? b) How much power

  27. physics

    Read the following paragraph from the introduction [paragraphs 1-3]. Holiday lights are a great way to learn about the flow of electric current. In a simple circuit, including one in an incandescent light bulb, electricity travels through a closed circuit,

  28. Math

    I am very confused on how to figure out the below math problem: A traffic light changes every 30 seconds. Another traffic light changes every 40 seconds. Both lights just changed. After how many minutes will both lights change at the same time again?

  29. Math HELP!

    A Lights-A-Lot quality inspector examines a sample of 25 strings of lights and finds that 6 are defective. a. What is the experimental probability that a string of lights is defective? b. What is the best prediction of the number of defective strings of

  30. math

    a string of decorative lights is 28 feet long. The first light on the string is 16 inches from the plug if the lights on the string are space 4inches apart how many lights are there on the string

  31. science

    Observed under magenta colored lights, you see a crayon that appears red. What colors could the crayon be when observed under ordinary white lights? _____cyan ____magenta ____green ____yellow ____red ___black ___white ____blue

  32. NUKMERACY

    THERE ARE 3 LIGHT HOUSES,THE FIRST ONE SHINE FOR 3 SECONDS, THEN IS OFF FOR 3 SECONDS.the 2 one shine for 4 seconds then is off for 4 seconds.the 3 one shine for 5 seconds,then is off for 5 seconds.all thr 3 lights have just come together.when is the first

  33. statistics

    Unknown to a quality-control inspector, 20% of a very large shipment of electric switches are defective. The inspector has been told to reject the shipment if, in a sample of 15 switches, 2 or more are defective. The probability that the shipment will be

  34. College Algebra

    A 30-foot string of lights will be attached to the top of a 24-foot pole for a holiday display. How far away from the base of the pole should the end of the string of lights be anchored.

  35. Physics

    Three different size lights are running off a low voltage system. The resistance of the three lights are R1 =3 ohms, R2 = 9 ohms, and R3 = 9 ohms. They are all connected in parallel with a 5.0 V battery. The internal resistance of the battery is

  36. Language Arts

    Identify the independent clause in the following sentences 1. If we are going to make it to the movie on time, we really need to leave right now. A. If we are going to make it B. If we are going to make it to the movie on time C. We really need to D. We

  37. Physics

    The mass of a minibus with the driver is 1.50×10^3 kg.Assume that the passengers have an average mass of 50.0kg each.The driver is moving at a speed of 30.0m.s^-1 when he notices that the traffic lights ahead have turned to red.He applies a force of 9000N

  38. CHEMISTRY

    I have an assignment to 'Research ionization energy levels and come up with 3 real world applications' and was told you look up lasers, plasma arcs and neon lights. Hours later, (lol) I'm still having a little trouble. Is there any way someone can explain

  39. probability and stats

    The quality-control inspector of a production plan will reject a batch of syringes if two or more defective syringes are found in a random sample of eight syringes taken from the batch. Suppose the batch contains 12% defective syringes. a. What is the

  40. MATH ANSWER HELP

    A lights A lot quality inspector examines a sample of 25 strings of lights and finds that 6 are defective. a. what is the experimental probability that a string of lights is defective b.what is the best prediction of the number of defective strings of

  41. Finite Math

    A box contains two defective Christmas tree lights that have been inadvertently mixed with eight nondefective lights. If the lights are selected one at a time without replacement and tested until both defective lights are found, what is the probability

  42. English

    What can you do to save electricity? 1. I can turn off the lights when I leave my room. 2 I can turn off the lights when I don't use the room. 3.I can turn off the lights when I don't stay in the room. 4. I can turn off the lights of my classroom when we

  43. physics

    Your younger brother and you are putting up christmas lights, he broke one of the bulbs causing all of the lights to go out. These lights are wired in what?

  44. statistics

    24. Suppose there are five traffic lights that you need to pass while driving from your work to school. The probabilities that you will stop for these red lights are: 0 red light with probability 0.05, 1 red light with probability 0.45, 2 red lights with

  45. probability

    a teacher on her way to work passes through 3 stoplights each morning. the distances between the stop lights are great and the lights operate independently of each other. if the probability of the red lights are .4,.8 and .6 for each light, what is the

  46. math

    Rufus is in charge of lighting a play. Half the lights he uses are white. Of the remaining lights, 1/3 have red filters, and 4 have blue filters. The 10 lights left have yellow filters. How many lights does Rufus use for the play?

  47. Physics

    Ken has five 200W security lights on outside of home. How much energy do the security lights use in 8 hrs? If the cost of electricity is 8 cents per kWh,what is the cost of operating the security lights ? Please help I'm not sure which formula to use?

  48. maths

    A building has three rooms. Each room has two separate electric lights. There are thus six Electric lights altogether. After a certain time there is a probability of 0.1 that a given light will have failed and all light are independent of all other lights.

  49. Math

    Sally wants to put lights all around her windows. She has 15 windows all the same. Each one is 3 feet long and 2 feet wide. How many strands of lights will she need to buy if each strand covers 10 feet? How much will it cost her if each strand of lights

  50. Math

    Dedi has a rectangular pool in his backyard. The surface area of the pool in 30m^2 and the width is 5m. There are 4 lights, equally spaced along each of the longer sides of the pool, including a light at each corner. What is the shortest distance between

  51. Science

    Fluorescent lights must not end up in a landfill. Why must these lights be properly disposed of

  52. Math

    Monique and her family decorated their house for the holidays.The roofline around their house measured 37 yards.When they went to the store,each box of lights contained 25 feet of stringed lights If they buy 5 boxes of lights,will they have enough lights

  53. Math

    Monique and her family decorated their house for the holidays.The roofline around their house measured 37 yards.When they went to the store,each box of lights contained 25 feet of stringed lights If they buy 5 boxes of lights,will they have enough lights

  54. music

    he is installing lights in his 15 feet by 24 feet garden. the lights need to be place 3 feet apart a long the perimeter. how many lights he needs for his garden?

  55. statistic

    A student must pass through 12 sets of traffic lights on his way to university. Suppose that each of the lights is green 39.5% of the time, yellow 5.9% of the time, and red 54.6% of the time. Suppose also that the traffic lights function independently (b)

  56. STAT-discrete random varaibles

    a driver passes 4 sets of traffic lights. the random varaible X is the number of traffic lights he has to stop at. the probabilty distribution for x is given: x 0 1 2 3 4 prob 0.1 0.2 0.3 0.2 0.2 a) find the upper quartile of the number of traffic lights

  57. Physics

    #1. Ten Christmas lights are connected in series and plugged into a 120 V wall outlet. Each light is identical and can be thought of as a resistor. a) What should the value of this resistance be if the total string is to dissipate 50 W? b) How much power

  58. physics

    When I was traveling at 18m/s with my bike I approach traffic lights when I was 30m far from them they turned red and it took me to recognize and react by applying breaks then I decelerated to 4.6m/s2. How will I go and in which side of the traffic lights?

  59. history

    Several religions have a festival of lights. In Buddhism, it celebrates the return of Buddha from heaven. http://www.mandalayhilltravels.com/myanmar-festival.htm what is the festaval of lights? is it like the celebration of budda or something like that??

  60. Math

    A manufacturer fills an order for 2,500 smartphones. The quality inspector selects a random sample of 50 phones and finds that 4 are defective. How many smartphones in the order are likely to be defective

  61. Trivia

    when were electric lights first used on christmas trees? I googled first christmas lights, and the information was the top choice In case you didn't find the site that Ken recommended -- here's its URL.

  62. math

    The city is planning to install streetlights and wants five lights along a walkway of 60 yards. If there is a light at the beginning and at the end of the walkway and the lights are evenly spaced, what is the distance between each light

  63. science

    A family is seated around the fireplace in a mountain cabin on a rainy night. A bright flash of lightning lights up the room and is followed in less than a second by a loud clap of thunder. The light bulb in a floor lamp flickers and goes out, as does the

  64. English

    1. All the lights went out and we were left in the dark. 2. All the lights went out and we were left in the darkness. 3. All the lights went out and we were left in dark. 4. All the lights went out and we were left in darkness. ============== Which

  65. science

    What can be concluded if the family finds out the lights in the bathroom work, but the floor lamp and tv set still do not work? 1. The electrical service to the cabin has not gone off. 2. The bathroom lights are on the same circuit as the floor lamp and tv

  66. math

    The CGJ girls plan to string a set of lights diagonally from two vertical poles for overhead lighting for dancing on the right side of the deck (see the diagram). The string of lights is sold in foot increments only. How many feet of diagonal lighting will

  67. statistics

    A quality supervisor for a factory that makes cell phone cases examines a sample of 46 cases. She finds that 8 cases are the wrong size. Which is the best prediction of the number of cases that will be the wrong size in a shipment of 3,000? A.)410 B.)475

  68. math

    The roof of a tunnel is in the shape of a parabolic arch whose highest point is 18m above the road. The road surface is 16m wide. Lights are placed in the tunnel 12 meters high. How far from center of the tunnel are the lights placed?

  69. geometry

    Tree stands 25 feet tall and 15 feet wide base 7.5 feet . You want to hang strings of lights from top to bottom on the outside. How long should each string be?

  70. Physics

    I am confused as to how light would work in the following question: Some very efficient streetlights contain sodium vapour under high pressure. They produce light that is mainly yellow with some red. Should a community having these lights buy dark blue

  71. Physics

    The stoplights on a street are designed to keep traffic moving at 34 mi/h. The average length of a street block between traffic lights is about 80 m. What must be the time delay between green lights on successive blocks to keep the traffic moving

  72. physics

    The stoplights on a street are designed to keep traffic moving at 37 mi/h. The average length of a street block between traffic lights is about 80 m. What must be the time delay between green lights on successive blocks to keep the traffic moving

  73. Physics

    The stoplights on a street are designed to keep traffic moving at 34 mi/h. The average length of a street block between traffic lights is about 80 m. What must be the time delay between green lights on successive blocks to keep the traffic moving

  74. Physics

    A car of mass 1300 kg is driving along a road at speed of 28m/s. As it approaches some traffic lights, the lights change to red and the driver applies his brakes causing the car to skid. The frictional force between the skidding tyres and the road is 0.8

  75. Statistics

    A production process is checked perifically by a quality control inspector. The inspector selects simple random samples of 30 finished products and computes the sample mean product weights x. If test results over a long period of time show that 5% of the x

  76. Computer

    This problem is a base conversion problem masquerading as a "word problem". You are responsible for controlling the stage lights at a small theater. The control box has control switches for 10 separate lights, and each switch can make its corresponding

  77. English

    They watch science programs in their spare time! Instructions: Select the correct answer. My answers are with capital letter 1. Jason wanted to pass on ... A. something who he had been told. B. SOMETHING, WHICH HE HAD BEEN TOLD. C. something that he had

  78. physics

    To combat wasteful habits, we often speak of “conserving energy,” by which we mean turning off lights and hot energy,” by which we mean turning off lights and hot water when they are not being used, and keeping thermostats at a moderate level. In

  79. math

    I have a math question that goes like this: There are 500 light that have on and off switches. One person goes and turns all the lights on. The second person switches the lights from 2,4,6,8...and so on. THe 3rd person switches 3,6,9,12....and so on. This

  80. physics

    A MASS OF A MINUBUS WITH THE DRIVER IS 1 500Kg .ASSUME THAT THE PASSENGERS HAV AN AVERAGE MASS OF 50Kg EACH .THE DRIVER IS MOVING AT A SPEED OF 30m.s WHE HE NOTICES THAT THE TRAFFIC LIGHTS AHEAD TURNED TO RED .HE APPLIES A FORCE OF 9 000N ON THE BREAK

  81. physics

    A car is stopped at a set of traffic lights. It takes off, accelerating at 4.5m/s2 until it is travelling at 60km/h. It maintains this velocity for 3 minutes before braking to a halt over 60m at another set of traffic lights. How far has the car travelled

  82. math

    A red light flashes every 2 minutes and a blue light flashes every 3.5 minutes. Suppose both lights flash together at noon. What is the first time after 1 p.m. that both lights will flash together?

  83. Physics

    A car of mass 1300 kg is driving along a road at speed of 28m/s. As it approaches some traffic lights, the lights change to red and the driver applies his brakes causing the car to skid. The frictional force between the skidding tyres and the road is 0.8

  84. Math

    4. The CGJ girls plan to string a set of lights diagonally from two vertical poles for overhead lighting for dancing on the right side of the deck (see the diagram). The string of lights is sold in foot increments only. How many feet of diagonal lighting

  85. math

    the top of a bridge tower needs new lights. the lights along the perimeter of the tower's top has an area of 65 sq. meters it has a width or 5meters. what is the perimeter of the top tower?

  86. Please can help me solving my problems(Probality)

    A manufacturer makes mobile phone. The manufacturer employs are inspector to check the quality of its product. The inspector tested a random sample of the phone being defective as 0.049. Ashmita buys three of the phones made by the manufacturer. Find the

  87. MATH

    One light flashes every 2 minutes and another light flashes every 3.5 minutes. Suppose both lights flash together at noon. What is the first time after 1 PM that both lights will flash together ?

  88. Biology

    Oxidized (blue) DPIP becomes colorless when it is reduced – that is, when it receives electrons. A diagram of the photosynthetic light reaction shows that water molecules are the source of these electrons. How is it that the DPIP was only able to receive

  89. BIOLOGY( please help me)

    Oxidized (blue) DPIP becomes colorless when it is reduced – that is, when it receives electrons. A diagram of the photosynthetic light reaction shows that water molecules are the source of these electrons. How is it that the DPIP was only able to receive

  90. CHEMISTRY

    I have an assignment to 'Research ionization energy levels and come up with 3 real world applications' and was told you look up lasers, plasma arcs and neon lights. Hours later, (lol) I'm still having a little trouble. Is there any way someone can explain

  91. Statistics

    A quality control inspector wants to estimate the mean inside diameter of the washers produced by a certain machine. A preliminary sample indicates that the inside diameters have a standard deviation of 0.30 millimeters. What sample size does he need to

  92. Physical Science

    Tony is driving across the outback in the middle of the night. He finds that he is running out of gas and might not make it to the next town. He tells Julie, his passenger, that he’s going to turn off the headlights in order to save fuel. She tells him

  93. Philosophy

    Symbolize these arguments and display truth trees to evaluate the resulting argument forms for validity. If the argument form is invalid, describe (in English) the conditions under which the premises would be true but the conclusion false. 99.32 There will

  94. math

    In a manufacturing process, each item leaving an assembly line will be examined by two inspectors: A and B individually. Based on past experiences, Inspector A detects 60% of the defective items. If the defective items are not detected by Inspector A, 90%

  95. math

    a quality supervisor for a factory that makes cell phone cases examines a sample of 46 cases are the wrong size in a shipment of 3,000? A)410 B)475 C)506 D)522

  96. English

    1. Rulers elsewhere in Europe soon learned about the advantages of street lights. 2. Rulers who were elsewhere in Europe soon learned about the advantages of street lights. (Does #1 mean #2? Is #2 a correct sentence and has the same meaning as #1?)

  97. Logical Reasoning

    No house lights on this side of the street is on. At every house across the street, at least one light is on. A) Residents on this side of the street are trying to save energy. B) Residents across the street have not turned off their lights. C) It is the

  98. math

    on a radio tower, a red light flashes every 6 seconds and a blue light flashes every 10 seconds. if both lights flash together at a certain time, how many seconds later will both lights flash together the next time

  99. English

    1. I go to Russia often. 2. That computer is fixed. 3. We go to any moive that plays there. 4. All of you chase that bus every morning! 5. Jason turned out the lights. Rewrite each sentence in simple furture tense. 1. I will go to Russia often. 2. That

  100. Math Prob/solving

    As Frank drives to work he has to pass through three lights. The probability that any light is green is 39%. Estimate the probability that exactly two lights will be green. Use the following list of digits which was taken from a table of random numbers. In

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