Pollution By-products The standard deviation of the
Chapter 8, Problem 31(choose chapter or problem)
Pollution By-products The standard deviation of the pollution by-products released in the burning of 1 gallon of gas is 2.3 ounces. A sample of 20 automobiles tested produced a standard deviation of 1.9 ounces. Is the standard deviation really less than previously thought? Use \(\alpha = 0.05\).
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