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The mathematics department wishes to form a sample from each of 10 courses offered. They randomly select three individuals from each course and include them in the 30-person sample. Which of the following methods was used to select the probability sample?(A) Random

(B) Systematic
(C) Stratified
(D) Cluster
(E) Simple random

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1 vote

Answer:

C) Stratified

Explanation:

We know that the mathematics department wishes to form a sample from each of 10 courses offered.They randomly select three individuals from each course and include them in the 30-person sample.

We conclude that was used a stratified sample. That s a stratified sample because the population was first divided into 10 sections and then randomly select three individuals.

C) Stratified

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