Answer to Question #219963 in Statistics and Probability for sai

Question

You need to select a simple random sample of three from nine friends who will participate in a survey. Assume the friends are numbered​ 1, 2,​ 3, 4,​ 5, 6,​ 7, 8, and 9. Select three​ friends, using the third row of digits in the random number table. Read off each​ digit, skipping any digit not assigned to one of the friends. The sampling is without​ replacement, meaning that you cannot select the same person twice. Write down the numbers chosen.

​(1) ​(2) ​(3) ​(4)

1.77952 45477 86183 14079

2 64955 24320 97448 26692

3 24773 19604 79733 39740

What are the numbers of the three subjects​ selected?

Answer 1

Here, there are 9 friends and has been assigned a number from 1 to 9. A simple random sample of 3 friends has to be selected.

Since we have a population of 9 and 9 is a one-digit number, we need to use the single digit of the numbers listed on the third row of digits in the random number table.

Consider the first column of the third row, 24773.

Thus, the first sample selected is 2; the second sample is 4; the third is 7.

The simple random sample of three friends selected from nine friends using random number table are 2,4,7.