Mathematics, 13.02.2021 09:20 AHMIRBROWN123
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.
Answers: 1
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The standard deviation of the pollution by-products released in the burning of 1 gallon of gas is 2....
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