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Answered>Order 175

In a gallup poll, 513 nataional adults 18 yearss or older who considered themselves to be Republican were asked, “Of every tax dollar that goes to the federal government in Washingon, D.C.. how many cents of each dollar are wasted?” The mean was found to be 54 cents with a standard deviation of 2.9 cents. The […]

 

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Answered>Order 174

Assume one file has   records. Each record takes R = 100 bytes, of which 10 bytes are for the key of the record. Suppose the key values range from 1 through 1,000,000, inclusive. Assume the block size B is 1000 bytes for all files, and that an address (block pointer, tree node pointer, or data record pointer) […]

 

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Answered>Order 173

Which of the following variables is considered a discrete variable? Select one: a. Amount of water in the Pacific Ocean. b. Money spent on gasoline during a week.  c. Grade point average (GPA) of students during 2016. d. Number of customers that visited a shopping mall during the summer months. Suppose that you have a dataset capturing the job […]

 

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Answered>Order 172

Magnetite is a mineral having the formulaFe3O4 or FeOFe2O3. A 1.1324-gsample of a magnetite ore was dissolved in concentrated HCl to givea solution that contained a mixture of Fe2+ andFe3+. Nitric acid was added and the solution was boiledfor a few minutes, which converted all of the iron toFe3+. The Fe3+ was then precipitated asFe2O3xH2O […]

 

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