The standard deviation of the pollution by-products released in the burning of 1 gallon of gas is 2.3 ounces. A random s

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answerhappygod
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The standard deviation of the pollution by-products released in the burning of 1 gallon of gas is 2.3 ounces. A random s

Post by answerhappygod »

The standard deviation of the pollution by-products released in
the burning
of 1 gallon of gas is 2.3 ounces. A random sample of 20 automobiles
tested produced a
standard deviation of 1.9 ounces. Is the standard deviation really
less than previously
thought? Use α = 0.05.
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