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Relative frequency of robots with both legs and wheels

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Robotics manufacturers can design mobility features in one of several ways. Robots can have legs, wheels, both legs and wheels, or no legs or wheels. Using a random sample of 106 robots, researchers found that 63 had legs only, 20 had wheels only, 8 had both legs and wheels, and 15 had no legs or wheels. What's the relative frequency of robots with both legs and wheels?

Reference no: EM132168177

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