In 2008, a highway safety administration reported that the number of pedestrian fatalities in city a was 65 and that the number in city b was 45. can we conclude that pedestrians are safer in city b? why or why not?

No.

Explanation:

For those fatalities to be comparable, the data produced should provide the number of fatalities per pedestrian as well.

Statistical data used in research is part of a bigger picture denominated the population. If City B has fewer pedestrians, or City A has more, the explanation to that difference in fatalities has nothing to do with city B being safer, but with being less populated with pedestrians.

it's

your answer would b. the missisipi river

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