answe all questions with explanation

Questions 3marks A different researcher would like to test a new treatment for seabirds that get contaminated after an oil spill. The next time there is an oil spill, she proposes taking pairs of birds and using this new treath on one bird in each pair and applying a standard treatment to the other. The outcome is then whether or not each bird is t enough to be released back into the wild. (a) Explain why the data from this trial would be regarded l3 objective data. (b) Explain why the data from this trial relating to each bird would be regarded as categorical data. (c) How should the pairs of birds be selected to ensure that this is a matched-pairs trial? [1] [1]