Computer keyboard failures can be attributed to electrical defects or mechanical defects. A repair facility currently has 25 failed keyboards, 8 of which have electrical defects and 17 of which have mechanicaldefects.(a) How many ways are there to randomly select 5 of these keyboards for a thorough inspection (without regard to order)?ways(b) In how many ways can a sample of 5 keyboards be selected so that exactly two have an electrical defect?ways(c) If a sample of 5 keyboards is randomly selected, what is the probability that at least 4 of these will have a mechanical defect? (Round your answer to four decimal places.)

Answered: Image /qna-images/answer/4d648a73-80bf-4bab-94fc-3944da634515.jpg

Answered: Computer keyboard failures can be…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A bag contains 8 black, 7 yellow, and 10 green marbles. If a sample of 6 is drawn at random, how many samples are possible in which the marbles are: a. all green? b. 2 black, 2 yellow, and 2 green?
A researcher has recruited 10 volunteers for a study. The volunteers are split into 2 groups of 5 people, a treatment group and a control group. In how many different ways can this be done? O 126 O 252 O 450 O 504
Diana Baniak, searching for an Ecology class, knows that it must be in one of EIGHT classrooms. Since the professor does not allow people to enter after the class has begun, and there is very little time left, she decides to try just FOUR of the rooms at random. How many of the possible different selections of FOUR rooms will succeed in locating the class? There are _______ successful selections.
When making an ice cream sundae, you have a choice of 33 types of ice cream flavors: chocolate (C), vanilla (V), or Moose Tracks (M); a choice of 22 types of sauces: hot fudge (H) or butterscotch (B); and a choice of 22 types of toppings: whipped cream (W) or fruit (F). If you are choosing only one of each, list the sample space in regard to the sundaes (combinations of ice cream flavors, sauces, and toppings) you could pick from. Separate the elements of the sample space with commas.
A product shipment contains 6 computer chips, of which two (2) are defective. If an inspector selects 4 chips at random for an order, without replacement, how many ways are there of picking both defective chips in this order (of 4 chips)? Order does not matter.
(3) Times, Wall Street Journal, and USA Today: In a survey of 150 business travelers, it was found that of three daily newspaper, New York 71 read New York Times; 43 read Wall Street Journal; 34 read USA Today; 30 read New York Times and Wall Street Journal; 25 read New York Times and USA Today; 15 read Wall Street Journal and USA Today; 10 read all three. A person is selected at random from this 150 travelers. (a). What is the probability that the randomly selected person reads New York Times or USA Today but not Wall Street Journal? (b). Given that this traveler read at least one of these three newspapers, what is the probability that he/she read USA Today? (c). Given that this traveler read exactly one of these three newspapers, what is the probability that he/she read Wall Street Journal?
A friend of mine is giving a dinner party. His current wine supply includes 7 bottles of zinfandel, 11 of merlot, and 13 of cabernet (he only drinks red wine), all from different wineries. (a) If he wants to serve 3 bottles of zinfandel and serving order is important, how many ways are there to do this? (b) If 6 bottles of wine are to be randomly selected from the 31 for serving, how many ways are there to do this? (c) If 6 bottles are randomly selected, how many ways are there to obtain two bottles of each variety? (d) If 6 bottles are randomly selected, what is the probability that this results in two bottles of each variety being chosen? (Round your answer to three decimal places.) (e) If 6 bottles are randomly selected, what is the probability that all of them are the same variety? (Round your answer to three decimal places.)
In a survey, it was found that 80% of adults operate the flusher of toilets in public restrooms with their foot. (a) If 300 adults are randomly selected, how many would we expect to flush toilets in public restrooms with their foot? (b) Would it be unusual to observe 255 adults who flush toilets in public restrooms with their foot? (a) We would expect (Type a whole number.) adults to flush toilets in public restrooms with their foot. (b) Would it be unusual to observe 255 adults who flush toilets in public restrooms with their foot? Choose the correct answer below. O A. Yes, because 255 is greater than u + 2o. O B. No, because 255 is greater than u + 20. O C. Yes, because 255 is between u - 20 and u+ 20. O D. No, because 255 is less than u- 20. O E. No, because 255 is between u -20 and u+ 20.
Hello, May I get help on this VERY SOON please? I’m extremely confused and a clear explanation would be helpful! Thank you!
A packet of gummy candy contains four strawberry gums, two lime gums, four black currant gums, and two orange gums. April May sticks her hand in and selects eight at random. Complete the following sentences. (a) The sample space is the set of all sets of gummy candies chosen from the packet of . (b) April is particularly fond of combinations of four strawberry and four black currant gums. The event that April will get the combination she desires is the set of all sets of gummy candies in which and .
1. A bag of balls contains 5 different colored balls that are alike except for the color. The colors are red, yellow, blue, green, and orange. If 3 balls are selected at random (without replacement), how many combinations are possible?

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