a researcher is comparing the effectiveness of three devices designed to help people who snore. there are…

a researcher is comparing the effectiveness of three devices designed to help people who snore. there are 120 people who snore participating in the experiment. using a table of random digits, the researcher will randomly place the participants into three equally sized treatment groups suitable for comparison. how many unique random numbers need to be selected from the table of random digits? 3 40 80 120

a researcher is comparing the effectiveness of three devices designed to help people who snore. there are 120 people who snore participating in the experiment. using a table of random digits, the researcher will randomly place the participants into three equally sized treatment groups suitable for comparison. how many unique random numbers need to be selected from the table of random digits? 3 40 80 120

Answer

Answer:

120

Explanation:

Step1: Determine group - size

There are 120 participants to be divided into 3 equal - sized groups. So each group has $\frac{120}{3}=40$ participants.

Step2: Consider random selection

To randomly assign all 120 participants to the three groups, we need to select a unique random number for each of the 120 participants from the table of random digits. So the number of unique random numbers needed is 120.