Answer:
To determine the number of rows required to select a sample of n=20 without replacement from a population of N=903 using a table of random numbers, you can follow these steps:
1. Start at row 03 and column 01 of the table of random numbers.
2. Read the random numbers sequentially, row by row, and column by column.
3. Keep a count of how many numbers you have read until you reach the 20th number.
4. The number of rows required to select the sample of 20 will be the number of complete rows you have gone through.
5. The last sample value will be the 20th number you read.
Please note that this process depends on the specific layout and arrangement of the table of random numbers you are using. You need to follow the table's structure as you read the numbers row by row.