According to an article in Real Estate Finance, developers and hotel operators have three ways of controlling shared facilities: the square footage allocation (SF) method, the revenue-generating (RG) allocation method, and the purchase price value (PPV) method. An industry analyst wants to know if one of these methods is more successful than the others and collects random samples of return on equity data (in percent) for ?rms that have used one of these methods. The data are as follows.

Test for equality of means, and state your conclusion.