According to a study, social robots now outnumber industrial robots worldwide. A

Question

According to a study, social robots now outnumber industrial robots worldwide. A social (or service) robot is designed to entertain, educate, and care for human users. In the study, design engineers investigated the trend in the design of social robots. Using a random sample of 98 social robots obtained through a Web search, the engineers found that 22 were built with legs only, 55 with wheels only, 7 with both legs and wheels, and 14 with neither legs nor wheels. This information is portrayed in the accompanying graph. Complete parts a through e below.

Use the graph to identify the social robot desing that is currently used the most. Choose the correct answer below.

A. Legs only, B. Wheels only, C. None, D. Both, or E. It is impossible to determine with the given information.

Explanation / Answer

The social robot desing that is currently used the most is the Wheels only robot as it has the highest frequency of i.e. 55. Therefore out of the 98 social robots obtained through a Web search 55 were wheels only and thus is the mostly used one.

Please note that the answer is based on the assumption that the sample choosen is random and representative of the population.

Therefore the correct answer is B. Wheels only.

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