A construction company wants to understand how important safety helmets are on their worksite. They find that around 73% of their workers wear safety helmets regularly. Of those who wear these helmets, only 14% report any head injuries; for those who do not wear them regularly, 52% report head injuries.  What is the probability that a person who has reported a head injury was wearing a helmet?

MATLAB: An Introduction with Applications
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ISBN:9781119256830
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A construction company wants to understand how important safety helmets are on their worksite. They find that around 73% of their workers wear safety helmets regularly. Of those who wear these helmets, only 14% report any head injuries; for those who do not wear them regularly, 52% report head injuries. 

What is the probability that a person who has reported a head injury was wearing a helmet?

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