Suppose the U. S. Environmental Protection Agency (EPA) would like to investigate the relationship between the engine
Question:
a. Calculate the Spearman rank order correlation coefficient.
b. Using a = 0.05, perform a hypothesis test to determine if the population rank correlation coefficient is less than zero.
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Car Camry Cobalt Accord Azera Altima Jetta Sebring Focus Acura TL Engine Size MPG 2.5 2.2 2.4 3.3 3.5 2.0 2.4 2.0 3.7 26 30 25 21 23 28 24 29 20
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