Without looking, Fred took 17 coins out of a jar of equal-valued coins. Is this a random sample of the coins in the jar?
Yes
Estelle polled the 12 customers who had been going to a particular barbershop the longest. Is this sample of the customers at the barbershop likely to be representative?
No
Layla polled the last 87 athletes to finish a bike race. Is this sample of the athletes in the bike race likely to be biased?
Yes
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