Mathematics, 29.08.2019 05:30 httpcindy14

20 points!
which of these is an example of a non-random sample?
out of all the seventh grade students in a public school district, fifteen are chosen to win a trip to a vacation destination.
at a school assembly, five students are randomly chosen to receive free admission to a theme park.
airline passengers to orlando, florida, are asked about vacation plans.
registered voters in arizona are surveyed to determine if they have relatives in florida.

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20 points!
which of these is an example of a non-random sample?
out of all the seventh...