Chapter 5, Problem 5.78RE

To determine

To choose an SRS of four using table B and explain your method clearly.

Answer to Problem 5.78RE

  $\begin{array}{l}\text{Montoya, Rodriguez, Castillo and Fernandez are in the}\\ \text{sample}\text{.}\end{array}$

Explanation of Solution

  $\begin{array}{l}\text{Let us assign a unique number between 1 and 30 to each student:}\\ \text{Anderson=1}\\ \text{Aspin=2}\\ \text{Benitez=3}\\ \text{and similarly}\mathrm{..}\\ \text{Wang=30}\\ \text{We will start from line 145 in table B}\text{.}\\ \text{Select the first 2-digit number}\text{. If the number is between 01 and 30, then select}\\ \text{the corresponding students, else ignore the number and select the next 2-digit}\\ \text{number:}\\ \text{19=Select Montoya}\\ \text{68=Ignore}\\ \text{71=Ignore}\\ \text{26=Select Rodriguez}\\ \text{33=Ignore}\\ 57=\text{Ignore}\\ 85=\text{Ignore}\\ 79=\text{Ignore}\\ 58=\text{Ignore}\\ 06=\text{Select Castillo}\\ \text{09=Select Fernandez}\\ \text{We then obtain Montoya, Rodriguez, Castillo and Fernandez are in the}\\ \text{sample}\text{.}\end{array}$