. The plan should include defining the sampling unit, establishing a numbering system for the population, and establishing a correspon¬ dence between the random number table and the popu¬ lation. After the plan has been designed, select the first five sample items from the random number table for each problem. Use a starting point of row 1009, column 1, for each problem. Read down the table using the left¬ most digits in the column. When you reach the last item in a column, go to the top of the next column.

1. Prenumbered sales invoices in a sales journal where the lowest invoice number is 1 and the highest is 6211.

2. Prenumbered bills of lading where the lowest docu¬ ment number is 21926 and the highest is 28511.

b. Use an available random number generator in a spread¬ sheet or other source to obtain the above samples with the computer.