Problem 54 of 7
Evaluate fairness of the lottery-style drawing: a computer randomly selects one number, and each participant was assigned one unique number.
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
compute selection probabilities.
Hidden until you reveal it.
Selection probability must be equal for each intended participant.
Enter your answer
Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Identify each participant's number of entries.
2. Compute or compare chance of selection.
3. Conclude fair only if chances are equal.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Saying multiple winners automatically makes a drawing unfair.