Computers and Technology, 17.08.2021 16:20 george27212
Suppose you define a flight to be "on time" if it gets to the destination on time or earlier than expected, regardless of any departure delays. Mutate the data frame to create a new variable called `arr_type` with levels `"on time"` and `"delayed"` based on this definition. Then, determine the on time arrival percentage based on whether the flight departed on time or not. What proportion of flights that were `"delayed"` departing arrive `"on time"`?
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