Tensile Strength Tensile Strength is the amount of stress a material can withstand before it breaks. Researchers wanted to determine the tensile strength of a resin cement used in bonding crowns to teeth. The researchers bonded crowns to 72 extracted teeth. Using a tensile resistance test, they found the mean tensile strength of the resin cement to be 242.2 newtons (N), with a standard deviation of 70.6 N. Based on this information, construct a 90% confidence interval for the mean tensile strength of the resin cement.

The state in which the manufacturing company you work for is located regulates the presence of a particular substance in the environment to concentrations ≤ x. recently-released, reliable research endorsed by the responsible federal agency conclusively demonstrates that the substance poses no risks at concentrations up to 5x. your company has asked you to consider designing a new process with a waste discharge stream containing up to 2x of the substance. based on the stated conditions, describe this possible.

You have been solicited to conduct a performance evaluation for a public organization that has been corrupted over issues of personnel embezzling funds. before actually conducting the evaluation, you—the evaluator—need to know certain specifics to conduct a thorough evaluation. compose a proposal that describes what type of evaluation will be conducted. in the proposal, explain the type of public organization. describe some of the main services, products, and activities the organization provides to the public. describe the size of the problem, who is affected by the problem, how long the problem has been in existence, and how long the evaluation will take. also, describe what the evaluation will assess with respect to organizational leadership. finally, what outcomes do you propose the evaluation will to achieve for the organization?

Suppose that fixed costs for a firm in the automobile industry (start-up costs of factories, capital equipment, and so on) are $5 billion and that variable costs are equal to $17,000 per finished automobile. because more firms increase competition in the market, the market price falls as more firms enter an automobile market, or specifically, , where n represents the number of firms in a market. assume that the initial size of the u.s. and the european automobile markets are 300 million and 533 million people, respectively.a. calculate the equilibrium number of firms in the u.s. and european automobile markets without trade.b. what is the equilibrium price of automobiles in the united states and europe if the automobile industry is closed to foreign trade? c. now suppose that the united states decides on free trade in automobiles with europe. the trade agreement with the europeans adds 533 million consumers to the automobile market, in addition to the 300 million in the united states. how many automobile firms will there be in the united states and europe combined? what will be the new equilibrium price of automobiles? d. why are prices in the united states different in (c) and (b)? are consumers better off with free trade? in what ways?