Mathematics, 17.01.2020 07:31 lanipooh01

You want to know the brand of jeans worn most often by people 20 to 30 years old. which of the following surveys is biased?

a)surveying people 20 to 30 years old at a store that sells one brand of jeans
b)surveying people 20 to 30 years old at a store that sells only jeans
c)surveying everyone at a store that sells only jeans

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