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A company wants to know which of two marketing slogans employees prefer. They divide employees alphabetically: those with last names A–M get Slogan 1, and those with N–Z get Slogan 2. What problem does this design have?
A company wants to know which of two marketing slogans employees prefer. They divide employees alphabetically: those with last names A–M get Slogan 1, and those with N–Z get Slogan 2. What problem does this design have?