Mathematics, 23.12.2019 22:31 Gearyjames8

Arazorblade manufacturer wants to test responses to a new blade for heavy beards. what is the best sample for an experiment?
a. a random sample from all people of all ages
b. a random sample of men with beards
d. a random sample of all people who shave
c. a random sample of men who shave and have a heavy beard

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