Problem on rolling a dice twice
A die is rolled twice. Let X denote the sum of the two numbers that turn up, and Y the difference of the numbers (specifically, the number on the first roll minus the number on the second). Show that E(XY)=E(X)E(Y). Are X and Y independent?
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Sodium nitrite (NaNO2) reacted with 2-iodooctane to give a mixture of two constitutionally isomeric compounds of molecular formula C8H17NO2 in a combined yield of 88%. Suggest reasonable structures for these two isomers.
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Foreign Affairs magazine conducted a survey to develop a profile of its subscribers (Foreign Affairs website, February 23, 2008). The following questions were asked.
Actual manufacturing overhead incurred during the month was $64,000. IncorrectActual costs are debits in the manufacturing overhead account.
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On May 1, 2014, Herron Corp. issued $386,400, 8%, 5-year bonds at face value. The bonds were dated May 1, 2014, and pay interest semiannually on May 1 and November 1.
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