D.the number of times the drug has removed a certain percentage of fluid from the patient's lungs
Answer:
He will be unable to tell whether a difference in exercise preference is related to a difference in age or to a difference in weight
Step-by-step explanation:
age could be a factor to exercise as well as weight so both affect the outcome so he has two samples
67 add the anwers though just so i can make sure
Answer:
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