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Please Help In a car dealership there are 11 cars. We know that the standard deviation of their gas consumption {MPG} is 6 {gallons}. We

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In a car dealership there are 11 cars. We know that the standard deviation of their gas consumption {MPG} is 6 {gallons}. We test drive 4 cars out of the 11 and test their consumption, Then the covariance between the second and the fourth car's consumption equals 0 es {3 as {3 3.6 o as

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