1 -1 4 -1 = A. فأوجد ما يلي: 0 -3 4( إذا كانت 1 -1 1 a( رتبة المصفوفة. b) معكوس المصفوفة.
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- A biologist has placed three strains of bacteria (denoted I, II, and III) in a test tube, where they will feed on three different food sources (A, B, and C). Each day 400 units of A, 500 units of B, and 600 units of C are placed in the test tube, and each bacterium consumes a certain number of units of each food per day, as sh own in Table . How many bacteria of each strain can coexist in the test tube and consume all of the food1st blank: 0.6267, 0.5006, 33, 0.7843 2nd blank: 1.44, 2.25, 1.15, 1.80 3rd blank: 0.7843, 0.6267, 0.5006, 0.4 4th blank: 2.25, 1.80, 1.15, 1.44 5th blank: larger or smaller 6th blank: 0.2689, 0.1293, 0.0145, 0.0378 7th blank: 0.0378, 0.1293, 0.0100, 0.2612 8th blank: flatter and more spread out or more like the z distributionEither deposit should be required on beer and soft drink containers, or these containers will be discarded along highways and the countryside will look like a dump. If these containers will be discarded either in parks or along highways, then deposits should be required on soft drink containers. Therefore, deposits should be required for soft drink containers. (B, S, H, C, P)
- Question and its 3 parts are attached with this.В 8 часа сутринта от град А за град В тръгнал велосипедист, който се движил със скорост 12 километра в час. Един час по-късно от В за А по същия път тръгнал велосипедист, чиято скорост била с 25% по- висока от тази на потеглилия от град А. До срещата първият велосипедист почивал 15 минути, а вторият - 20 минути. Като първият велосипедист е изминал 5 километра повече от втория, намерете разстоянието от А до ВSuppose a man's occupation can be classified as professional, skilled worker, or unskilled worker. Suppose eighty percent of the sons of professional men are professionals, ten percent skilled workers, and ten percent unskilled workers. further suppose that sixty percent of the sons of skilled workers are skilled workers, twenty percent professional, and twenty percent unskilled. finally, in the case of unskilled workers, fifty percent of the sons are unskilled workers and twenty-five percent are in the other two categories. Assume each man has at least one son, and construct a Markov chain by tracing the occupation of a randomly selected son of a particular family over several generations. Construct the transition probabilities matrix. Find the probability that the randomly selected grandchild of an unskilled worker is a professional worker.
- Human blood may contain either or both of two antigens, A and B. Blood that contains only the A antigen is called type A, blood that contains only the B antigen is called type B, blood that contains both antigens is called type AB, and blood that contains neither antigen is called type O. A certain blood bank has blood from a total of 1300 donors. Of those, 615 have type O blood, 460 have type A, 150 have type B, and 75 have type AB. What is the probability that a randomly chosen blood donor is type O? Question 3 options: 1, or 100% 0.3538, or 35.38% 0.5308, or 53.08% 0.4731, or 47.31%A snowboard manufacturer has three plants, one in the eastern United States, one in the western United States, and one in Canada. Production records show that the U.S. plants each produced 10,000 snowboards last month, while the Canadian plant produced 8000 boards. Of all the boards manufactured in Canada last month, 4% had a defect that caused the boards to delaminate prematurely. Records kept at the U.S. plants show that 3% of the boards manufactured in the eastern United States and 6% of the boards manufactured in the western United States had this defect as well. a) What proportion of the boards manufactured last month were defective? b) What is the probability that a snowboard is defective and was manufactured in Canada? c) Given that a snowboard is defective, what is the probability that it was manufactured in the United States?Chapter 6, Section 4-HT, Exercise 218 - MathPad Mind-Set MattersIn 2007 a Harvard psychologist set out to test her theory that ‘‘Mind-Set Matters.”1 She recruited 75 female maids2 working in different hotels to participate in her study, and informed 41 maids (randomly chosen) that the work they do satisfies the Surgeon General’s recommendations for an active lifestyle (which is true), giving the maids examples on how their work qualifies as good exercise. The other 34 maids were told nothing. After four weeks, the exercise habits of the two groups had not changed, but the informed group had lost an average of 1.79 lbs (s=2.88) and the uninformed group had lost an average of 0.2 lbs (s=2.32). The data are stored in MindsetMatters. Based on this study, does ‘‘Mind-Set Matter”? In other words, for maids, does simply thinking they are exercising more actually cause them to lose more weight?Click here for the dataset associated with this question.1Crum, A. and Langer, E.,…
- Assume that there are 6 types of upholstery, 2 types of wood, and 5 designs to choose from. Of the designs, 4 designs permit both a choice of wood and a choice of upholstery, but 1 of the design allows only a choice of upholstery. How many different chairs can be made?According to the United States Census Bureau (2011 data), there are approximately 55,500,000 married couple households in the United State. Every married-couple household is classified into one of three categories:• both native which means that both spouses were born in the U.S.• both foreign which means that both spouses were born outside of the U.S.• one native, one foreign which means that one spouse was born in the U.S. and one was born outside of the U.S..If 79.5% of married couple households are both native and 13.2% are both foreign, then(a) what percentage of married couple households are one native, one foreign % married couple households are one native, one foreign(b) how many married couple households are one native, one foreign? married couple households are one native, one foreign1. How many of the surveyed students plan to take physicsduring their first year?2. How many of the surveyed students do not plan to takebiology, chemistry, or physics during their first year?3. How many of the surveyed students plan to take onlybiology and chemistry during their first year?4. How many of the surveyed students plan to take physics orchemistry during their first year?