Filter for bike crashes in Residential development areas where driver age group is 0 to 19.

ncbikecrash %>%
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Identify the most commonly occurring estimated speed for drivers.

ncbikecrash %>%
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Remove text like A:, B:, etc. from the bike_injury variable and save the result in a new variable called bike_injury_rec, and check your work.

ncbikecrash <- ncbikecrash %>%
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