A civil engineer claims that more than 75% of the bridges in a certain region are in need of major repairs. To test this claim, a random sample of 100 bridges is inspected, and 85 of them are found to be in need of major repairs. At a significance level of 0.05, is there enough evidence to support the engineer's claim?
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A civil engineer claims that more than 75% of the bridges in a certain region are in need of major repairs. To test this claim, a random sample of 100 bridges is inspected, and 85 of them are found to be in need of major repairs. At a significance level of 0.05, is there enough evidence to support the engineer's claim?
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- An existing robot is used in a commercial material laboratory to handle ceramic samples in the hightemperature environment that is part of several test procedures. Due to changing customer needs, the robot will not meet future service requirements unless it is upgraded at a cost of $2,000. Because of this situation, a new advanced technology robot has been selected for potential replacement of the existing robot. The accompanying estimates have been developed from information provided by some current users of the new robot and data obtained from the manufacturer. The firm’s before-tax MARR is 25% per year. Based on this information,should the existing robot be replaced? Assume that a robot will be needed for an indefinite period.The senior management of Mazoon water company from Muscat has recently conducted an online Zoom meeting with its technical experts at Ibri, to discuss the decision of replacing their major water plant at Dunk.What could be the reason for the above decision. a. Sudden failure of the water plant b. To upgrade the existing water plant with latest technology c. Gradual deterioration of the water plant d. All the optionsThe city of Papagos, Arizona, had a deteriorating bridge in need of repair on a prominent public roadway. The city posted notices seeking proposals for an artistic bridge design and reconstruction. Davidson Masonry, LLC, which was owned and managed by Carl Davidson and his wife, Marilyn Rowe, decided to submit a bid to create a decorative concrete structure that incorporated artistic metalwork. They contacted Shana Lafayette, a local sculptor who specialized in large-scale metal creations, to help them design the bridge. The city selected their bridge design and awarded them the contract for a commission of $184,000.Davidson Masonry and Lafayette then entered into an agreement to work together on the bridge project. Davidson Masonry agreed to install and pay for concrete and structural work, and Lafayette agreed to install the metalwork at her expense. They agreed that overall profits would be split, with 25 percent going to Lafayette and 75 percent going to Davidson Masonry.…
- Five years ago a consulting engineer purchased a building for company offices constructed of bricks that were not properly fired. As a result, some of the bricks deteriorated from their exposure to rain and snow. Because of the problem with the bricks, the selling price of the building was 25%below the price of comparable, structurally sound buildings. The engineer repaired the damaged bricks and arrested further deterioration by applyingan extra-strength solvent-based RTV elastomeric sealant. This resulted in restoring the building to its fair market value. If the depressed purchase price of the building was $600,000 and the cost of getting it repaired was $25,000, what is the equivalent value of the “forced appreciation” today, if the interest rate is 8% per year?The international environmental management standard ISO 14000 requires that Oliver, the pollution control officer of BUCENG, must install suitable pollution control equipment. He is considering two of them, one based on the principle of neutralization and the other of precipitation. They cost Php 7,500,000 and Php 4,500,000 respectively; both are expected to last 5 years and have salvage values of Php 1,500,000 and Php 1,050,000 respectively. The chemical needed for the neutralization-based equipment costs Php 500,000 per year, while for the other Php 950,000 per year. Their annual maintenance costs are Php 5,000 and Php 7,500 respectively. Develop a cashflow table to help Oliver visually compare the data pertaining to the two alternatives.Subject: acounting
- The EPA is in process of investigating a possible water contamination issue at the manufacturing facility of NW forest products. The EPA has not yet proposed a penalty assessment. Management feels the possibility of a penalty is remote but if an assessment is made an unfavorable settlement is estimated to be $25 million . Determine how the estimated cost of the settlement will affect the current financial statements.Two remediation options are being considered for a contaminated land area formerly used for industrial operations. Option 1 involves removing all of the contaminated soil over a two-year period at a cost of 2.2 million per year. Option 2 is to leave the soil in place but treat it with a bioremediation agent at a cost of 960,000/year over a three-year period. Subsequently, the soil would be sampled each for the next five years to ensure the effectiveness of the treatment system. The cost of the sampling program would be 250,000 the first year and 100,000/year for the remaining years.Draw a cash flow diagram for each of the two options.a.Calculate the net present value of each option based on discount rate of 6 percent/year.b.Which option has the lowest overall cost? c.What is the difference in the total cost between the two options based on NPV? d.Give your answer both in dollars and as a percentage differenceTwo remediation options are being considered for a contaminated land area formerly used for industrial operations. Option 1 involves removing all of the contaminated soil over a two-year period at a cost of 2.2 million per year. Option 2 is to leave the soil in place but treat it with a bioremediation agent at a cost of 960,000/year over a three-year period. Subsequently, the soil would be sampled each for the next five years to ensure the effectiveness of the treatment system. The cost of the sampling program would be 250,000 the first year and 100,000/year for the remaining years.i. Draw a cash flow diagram for each of the two options.ii. Calculate the net present value of each option based on discount rate of 6 percent/year.iii. Which option has the lowest overall cost? iv. What is the difference in the total cost between the two options based on NPV? Give your answer both in dollars and as a percentage difference.
- The production manager on the Ofon Phase 2 offshore platform operated by Total S.A. must purchase specialized environmental equipment or an equivalent service. The first cost is $250,000 with an AOC of $66,000. The manager has let it be known that he does not care about the salvage value because he thinks it will make no difference in the decision-making process. His supervisor estimates the salvage might be as high as $100,000 or as low as $10,000 in 3 years, at which time the equipment will be unnecessary. Alternatively, a subcontractor can provide the service for $165,000 per year. The total offshore project MARR is 13% per year. Determine if the decision to buy the equipment is sensitive to the salvage value. The annual worth of high salvage value is $______________ 142,525 incorrect.. The annual worth of low salvage value is $_______________ 168,940 incorrect.. Decision is sensitive…I need some opinions/thoughts on this... A non-destructive test program for an aircraft engine compressor blade made of Ti-6AL-4V titanium alloy can ensure that no flaw greater than 2 mm will exist in the finished part. a) Can this inspection program prevent the occurrence of fast fracture/catastrophic failure? b) Why? I say no, because the test itself can only test the surface and internals of the object but can not ensure: Components needing to be cleaned before and after inspection Sensitivity of inspection can sometimes be affected by the finish of a component. Sometimes there might be a lack of depth sizing On some non-destructive test methods, only relatively non-porous surfaces can be inspected Some test methods require electricity Some can also be affected by variations in magnetic permeability Some tests are only effective on materials that are conductiveEnvironmental scientists David Pimentel, Rodolfo Zuniga, and Doug Morrison of Cornell University reviewed scientific estimates for the economic and ecological costs imposed by introduced and invasive species in the United States. They found that, as of 2005, approximately 50,000 species had been introduced in the United States and that these accountedfor over $120 billion in economic costs each year. These costs include direct losses and damage, as well as costs required to control the species. (The researchers did not quantify monetary estimates for losses of biodiversity, ecosystem services, and aesthetics, which they said would drive total costs several times higher.) Calculate values missing from the table to determine the number of introduced species of each type of organism and the annual cost that each imposes on our economy. Organisms that damage crop plants are the most costlyof introduced species. Weeds, pathogenic microbes, andarthropods that attack crops together account…