11
QuizMultiple Choice

Unit Test

Question 11 • Academy - Algebra, Functions, and Data Analysis

A researcher is comparing the effectiveness of three devices designed to help people who snore. There are 210 people who snore participating in the experiment. Using a table of random digits starting from the first row and column, the researcher will randomly place the participants into three equally sized treatment groups suitable for comparison.

Answer
A
0–2
B
1–3
C
000–210
D
001–210

Explanation

Number the 210 participants from 001 through 210, then use the random-digit table to select participants without replacement and divide them into three groups of 70. The range 001–210 labels exactly 210 people; 000–210 includes 211 numbers.

AI-written and checked against the verified answer.

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