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Left-handednessFeatured science projectScience project video

Conclusion

The hypothesis that left-handed persons  form less than 10% of the total number of persons surveyed is proven to be true.

Left- handed persons live in right handed world. Almost all  consumer items  that are mass manufactured, are meant for a  right- handed society. Basic tools and items like scissors, pliers, door knobs, buttons on a shirt, musical instruments and sports equipments are all designed and mass produced for the right handed majority. However left-hander takes pride in being part of the company   of great minds including the likes of Leonardo da Vinci and Michelangelo!

Also consider

Perhaps not all persons who are left-handed are also left-legged. Conduct another survey to find out  how many left-handed persons kick  ball with their left foot.

Conduct another survey on how many persons can fold their tongue.

References

Left-handedness - http://en.wikipedia.org/wiki/Left-handedness

Why are some people left-handed? - http://www.coolquiz.com/trivia/explain/docs/lefthand.asp

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Complexity level:
4
Project cost ($):
0
Time required:
1 hour to prepare, 3 days for the science project experiment
Material availability:
Easily found
Safety concerns:

None