7.Dominions, 80 percent of the total imports go to brewing. 75 percent of theimports are grown in the Northern Hemisphere, 80 percent of the Northerngrown barley goes to brewing, 100 percent of foreign Southern grownbarley goes to stock feeding. Show that the foreign Northern grown barleygoes to brewing cannot be less than 30 percent nor more than 60percent of the total imports. (It is assumed that brewing and stock feedingare the only two uses to which imported barley is put).50 percent of the imports of barley into a country came fromwhich

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Answered: 7. 50 percent of the imports of barley…

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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The Cheese Max Company sells cheese products and snacks. They also serve tea (which tastes like cheese miss without basis). They have 5 branches, which should be manned by five salespersons. These salespersons have already been assigned previously in all 5 branches. Given their various previous contacts, the salespersons' production in terms of wasted cheese were gathered. The amount of cheese (in kilograms per month) wasted by each sales in every branch they have manned is as follows: Branch 3 15 16 Branch 1 Branch 2 Branch 4 Branch 5 Manuelito Ken Errine Marimar Bill 17 10 16 9. 20 12 9 14 11 16 14 15 12 17 14 10 10 18 13 12 15 11 Which salesperson should be assigned to each branch to minimize total kalat? Identify the optimal assignments and compute total minimum waste.
4. Two hundred patients suffering from depression enrolled in a clinical trial to test the effects of various antidepressants. Zoloft was given to 27% of patients, Lexapro was given to 30%, and Prozac was given to 27%. Thirteen percent were treated with at least Zoloft and Lexapro, 11.5% were given at least Lexapro and Prozac, 7% were given at least Zoloft and Prozac, and 4% were treated with all three drugs. (a) How many patients in the trial were given at most two of the three drugs? (b) How many patients were treated with Zoloft and Prozac but not Lexapro? (c) How many patients were given a placebo containing none of the three drugs?
The market of a cosmetic product is divided into two competitors, Alpha and Beta. Suppose that Beta has just entered the market and has 10% of the market shares, which means Alpha has the remaining 90%. Assume that every year, 26% of Alpha clients will switch to Beta, and that 14% of Beta clients will switch to Alphá. What will the market shares be in the long run? O a) Alpha: 55%, Beta: 45% O b) Alpha: 44%, Beta: 56% O c) None of these O d) Alpha: 45%, Beta: 65% O e) Alpha: 41%, Beta: 59% O f) Alpha: 37%, Beta: 63%
2. To appeal to customers that are trying to cut calories, a company that sells orange juice decides to market a premium juice, "OJ 50", which has half as many calories as traditional orange juice. The ingredient listing reveals that OJ 50 consists of 50% water and 50% orange juice. Besides misleading customers to pay more for less orange juice, a consumer group believes that the product actually consists of greater than 50% water. To test this claim they select a random sample of 50 bottles of their 52-ounce OJ 50 and detemine the proportion of each that is water. They decide to use a=0.05. (a) State appropriate hypotheses for performing a significance test. (b) Describe what a Type I error would be in this context. (c) What is the probability of making a Type I eror when performing this test? (d) Describe what a Type II error would be in this context. (e) Which error (Type I or Type II) is more serious for the company that produces OJ 50? Explain.
2. Mobile phone operator TELE2 has at least 4 tariffs: Brivais(B), Savejis(S), Smart(SM), Zelts(Z). In 2019Y the proportion of clients for each tariff is: B=5%; S=50%; SM-15%; Z=30%. Possible changes from one type of tariff to another for the following year are the following: to B to S to SM to Z from B 5% 2% 1% 1% 1% from S 3% 1% from SM 5% 5% from Z 5% 4% 3% Find initial distribution, Transition matrix (stochastic matrix), stationary distribution and plot a graph for transition of one step. bain ic the following
1) The rabies vaccine for dogs can save your dog's life. If your dog bites another animal or is on the receiving end of a bite, the vaccine can protect them from a dangerous and potentially fatal illness. Furthermore, in most places, the rabies vaccine for dogs is legally required. The NYC Department of Health wants to know if LESS than 95% of the dogs in the city have been vaccinated with their rabies vaccine. 158,045 of the 165,000 dogs examined had their rabies shots. Risk no more than 5% Type I error. What are the hypotheses? Null and Alternate
4. A veterinarian with a large practice was interested in whether to concentrate on only purebred dogs or to continue to treat mixed breeds as well. The table below summarizes the spending habits of his clients for the last year. Туре of Dog Pruebred Mixed Breed Total Less than S100 191 213 404 Нealth Care S100 or more 354 152 506 Spending Total 545 365 910 (a) If one of these dogs was selected at random, what is the probability that $100 or more was spent on the dog's health care last year? Given that one of these dog owners spent less than $100, find the probability that the dog was a mixed breed? (b) (c) Given that a randomly selected dog is a mixed breed, what is the probability that less than $100 was spent on its health care less year? Are the events “spending $100 on health care" and “have a mixed breed dog" independent of dependent? Explain. (d)
The average time that Pakistani commute in first three Banks is 18.033 minutes (Customer commute time in Banks, March 25, 2021). The average commute times in minutes for 8 Banks are given in Table 3.1. Table 3.1 Banks Time (minutes) HBL 15.6 JS Bank 18.4 Faisal Bank 20.1 UBL 17.7 Mezan Bank 12.3 Allied Bank 23.8 Askari Bank 22.5 Habib Metro Bank 14.9 HBL 15.6 JS Bank 18.4 a) What is the mean commute time for these 8 Banks? b) What is the median commute time for these 8 Banks? c) What is the mode for these 8 Banks? d) What is the variance and standard deviation of commute times for these 8 Banks?
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