Chapter 12 Essays

Chapter 12 Essays Chapter 12 Essay Chapter 12 Essay Chapter 12 13 1. A sales manager collected the following data on salespersons’ annual sales and years of experience. Years of Annual Sales Salesperson Experience ($1000s) 1 1 80 2 3 97 3 4 92 4 4 102 5 6 103 6 8 111 7 10 119 8 10 123 9 11 117 10 13 136 a. Develop a scatter diagram for these data with years of experience as the independent variable. b. Develop an estimated regression equation that can be used to predict annual sales given the years of experience. c. Use the estimated regression equation to predict annual sales for a salesperson with nine years of experience. 2. Dianes Beauty Salon is currently hiring beauticians at its new location in a popular mall. Diane wants to know what commission percentage to pay the beauticians based on experience. A survey of 12 licensed beauticians was taken with the following results. Commission Years of Commission Years of Percentage (y) Experience (x) Percentage (y) Experience (x) 24 2 25 4 18 1 44 12 30 5 33 8 41 10 24 3 35 8 20 1 35 7 40 10 a. Find the least squares line equation. b. What percentage of the variation in commission percentage is explained by the variation in years of experience? . Interpret the coefficient value for years of experience in the least squares equation. d. Estimate the commission percentage for a beautician with 6 years of experience. 3. Jensen Tire Auto is in the process of deciding whether to purchase a maintenance con- tract for its new computer wheel alignment and balancing machine. Managers feel that maintenance expense should be related to usage, and they collected the follo wing information on weekly usage (hours) and annual maintenance expense (in hundreds of dollars). Want to get a price estimate for your Essay? Deadline Paper type Essay (Any Type) Admission Essay Annotated Bibliography Argumentative Essay Article Review Book/Movie Review Business Plan Case Study Coursework Creative Writing Critical Thinking Presentation or Speech Research Paper Research Proposal Term Paper Thesis Other Article (Any Type) Content (Any Type) Q&A Capstone Project Dissertation Lab Report Scholarship Essay Math Problem Statistic Project Research Summary Assignment Dissertation chapter Speech Dissertation chapter: Abstract Dissertation chapter: Introduction Dissertation chapter: Hypothesis Dissertation chapter: Literature Review Dissertation chapter: Methodology Dissertation chapter: Analysis/Results Dissertation chapter: Discussion Dissertation chapter: Conclusion Dissertation Proposal Thesis Statement Thesis Proposal Application Essay Pages 550 words(double spaced) 126 writers online Check Price A limited time offer! Get custom paper sample written according to your requirements urgent 3h delivery guaranteed Order now Chapter 12 Paper Hydrologists the scientists who study Earth’s waters, evapotranspiration A little less than two-thirds of the rain that falls on land evaporates back to the atmosphere from land surfaces and plant leaves The water balance coefficient is a general index of the availability of water in a particular region. It is calculated by subtracting potential evaporation from rainfall. In arid regions, water balance coefficientsare negative. In the world’s deserts, for example, they vary between –200 and –300 cm (–79 and –118 in.).In the humid rain forests of the world, water balance coefficients are positive and can exceed 400 cm (158 in.). In general, forests grow where water balance coefficients are positive; savannas, grasslands, and deserts are found in regions where coefficients are negative. A watershed is the area of land from which rainfall drains into a river or lake. Watersheds are also called drainage basins. Open watersheds are drained by rivers that eventually make their way to the sea. Closed watersheds are inland basins that do not drain to the sea. nonconsumptive uses Activities that use water and then return it to streams or aquifers are said to be this. Such as, hydroelectric power and wastewater in septic systems consumptive uses In other activities, such as irrigation and industrial cooling, a considerable amount of water evaporates into the atmosphere. These activities are said to be this because much of the water is not returned to streams or aquifers. water table the underground depth where rock and sediment are completely saturated with water. recharge zone is an area where water flows directly between the soil surface and the water table. unconfined Aquifers located beneath recharge zones are said to be this confined In other aquifers, groundwater is trapped between layers of comparatively impermeable rock or sediment; such aquifers are said to be this discharge zones Groundwater flows to the surface in these. In places where a confined aquifer meets the soil surface, water may flow out freely in a seep or spring. an artesian well Sometimes a well is drilled into a confined aquifer where the groundwater is under great pressure from the weight of the water above it. The pressure causes the water to rise above the confining layer, without the need for pumping. Such a well is called this. hydrophytes Some species of plants have adaptations that allow them to grow in these anaerobic soils; these plants are called these. Marshes are periodically or continuously flooded wetlands that are dominated by herbaceous plants, including grasses, rushes, reeds, and cattails. Swamps are dominated by shrubs or trees and fed by flowing water. Forested swamps are found in the broad floodplains of many of the world’s major rivers. Bogs The primary source of water in bogs is rainfall. Bogs are wetlands with peat deposits that support a variety of evergreen trees and shrubs. Fens are wetlands that are fed primarily by groundwater. They have peaty soils that typically support a variety of grasses and grasslike rushes, as well as occasional patches of woody vegetation. Florida Everglades Irrigation efficiency is the percentage of the water applied to fields that is actually used by crop plants.Agricultural scientists estimate that average irrigation efficiency of cropland is less than 40%. desalination The process of removing salts and other chemicals from seawater is called this. distillation boiling water and condensing the steam, reverse osmosis filtering water through a selective membrane