A railway company installed two sets of 50Burma ties each. The two sets were treated with creosate by twodifferent processes. After a number of years of service it was foundthat 22 ties of first set and 18 ties of the second set were still in goodcondition. Are we justified in claiming that there is ao real differencebetween the preserving properties of the two processes.

Answered: Image /qna-images/answer/1e6138ac-d808-46e7-a9f0-04b15eb4073e.jpg

Answered: railway company installed two sets of…

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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Suppose twin brothers, Lim and Jim are taking part in an experiment called ‘Twin’sTelepathy Test’. In this test, 5 candles of different colors are shown to both the brothersin the beginning. Then, the twins are put into two different rooms and the candles aregiven to Jim. He picks a candle himself, presses a buzzer to let Lim know that onecandle’s been picked without telling him the color of the candle. Then Jim tries toconnect to Lim through his mind and transmit the name of the color to Lim telepathically.Now, Lim has to guess the color of the candle. This goes on for 5 times for all fivecandles.a. What is the probability that Lim makes exactly 4 right guesses?b. The same experiment is repeated, but this time after each wrong guess Lim makes,the correct answer is shown to him. Now what is the probability that Lim makesexactly 4 right guesses?
A committe of 5 members is to be formed out of 6 gents and 4 ladies. In how many ways this can be done, when atleast two ladies are included
2. A survey states whether a household income (inc) is high or low based on the make of the cars the husband and wife each own. There are 4 car types, dom(h) = dom(w) = {/1234}, the first two being 'cheap' and the last two being 'expensive'. The survey finds that, given their household income, the types of cars owned by a husband and wife are independent ie. wife's car type I husband's car type family income and the following probabilities p(inc = louw) = 0.8, p(wline low)= [0.7 0.30 0", p(wlinc= high) = [0.2 0.1 0.40.3", p(hline = low) = [0.2 0.8 0 0 and p(h|ine = high) = [000.30.7" Compute the marginal p(w,h) and show that whilst hlwine, it is not the case that hLw.
06. In how mnany way, can a manager arrange 15 employees into 3 groups
6) A small business owner you follow on TikTok is SO EXCITED because last month, she was able to begin selling her product in a popular chain store around the nation. Her contract with the chain store says that at any time, there will be at least 20 of her products sitting out on the shelves. She wants to conduct a survey to see if that is true. She visits 5 of the local chain stores around her and records the number of products of hers that are on the shelves. She will then construct a 95% confidence interval to determine the mean number of products on the shelves for all of the stores. (a) Discuss whether this study meets the each of the conditions for constructing a confidence interval. If one of the conditions has not been met, what additional information would be required or what change in the study would you recommend? (b) If, instead of constructing a 95% confidence interval, the business owner constructed a 98% confidence interval, would the 98% interval be wider, narrower, or…
11. In how many ways can we seat 7 people at a round table with a certain 3 people not in consecutive order?
3. In how many different ways can the letters of the word 'OPTICAL' be arranged so that the vowels always come together?
7.) Several years ago, the US began running out of telephone numbers. Telephone companies introduced new area codes and numbers were used up, and eventually almost all area codes were used up. (a) Until recently, all area codes had a 0 or 1 as the middle digit, and the first digit could not be 0 or 1. How many such area codes are possible? (b) The actual number of area codes under this system was 152. What could be the cause of the discrepancy between this number and your answer to part (a)?
There are 12 fruits in a basket of which 5 are apples, 4 mangoes and 3 bananas (fruitsof same species are identical). How many ways are there to select at least one fruit.

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