Question: Which of these studies might be analyzed with a correlation? a. The cost of various cars when new and the amount of time before those

Which of these studies might be analyzed with a correlation?
a. The cost of various cars when new and the amount of time before those cars need repair
b. The number of illnesses reported per year by vegetarians versus non vegetarians
c. The duration of fever for viral versus bacterial infections
d. The number of miles dieters walked and the amount of weight they lost

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