A school official wants to estimate the average number of hours per week that students devote to
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Question:
A school official wants to estimate the average number of hours per week that students devote to homework. The population of students at this school is grouped by major. From each major, a random sample of students is selected. The school official is using
Select one:
a.
a cluster sample.
b.
a systematic sample.
c.
a simple random sample.
d.
a stratified random sample.
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