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01-12-2022
Mathematics

Answered

A researcher wanted to check whether marriage causes people to become more

responsible. Specifically, he was interested to know if marriage causes people to

become more careful drivers.

He went over the files of all car accidents that occurred in the past 3 years in his

state, and he calculated how many accidents out of the total number of accidents

were caused by married people. Then, he compared his results with the actual

percentage of married people in his state.

What type of statistical study did the researcher use?

Answer :

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