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A survey of 100 dog owners showed that the average dog 'checked the mail' eleven times during an evening walk. Which question most probably represents the purpose of the study?

a) How many 'mail check stops' can a dog be expected to make on an evening walk?

b) How many dog owners take dogs for an evening walk?

c) How many dogs 'check the mail' on an evening walk?

d) How many pet owners have dogs?

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