The number you enter in this question represents the percent chance that you believe a randomly selected Person B gave over CZK 50 to the Person A s/he was matched with. Let us call this number P. If you input P = 100, it means that you think that with 100% chance the randomly selected Person B gave over CZK 50 to the Person A. If you input 0, it means that you are sure that this randomly selected Person B did not give over CZK 50 to the Person A.

Your reward will be determined as follows: The computer will first randomly select two numbers. Both numbers are selected from the range 0 to 100, with every number from 0 to 100 being equally likely to be selected. A reward of CZK 200 will be added to your earnings if one of the following conditions applies:

• The randomly selected Person B did give over CZK 50 to the Person A and the P you entered is greater than at least one of the numbers selected by the computer.
• The randomly selected Person B did not give over CZK 50 to the Person A and the P you entered is lower than at least one of the numbers selected by the computer.

This mechanism ensures that in all circumstances, the best strategy is always to give your actual estimate of the percent chance that the randomly selected Person B gave over CZK 50 to the Person A that s/he was matched with in Part 1.