Challenge A store is giving out cards labeled 1 through 10 when customers enter the store. If the
card is an even number, you get a 10% discount on your purchase that day. If the card is an odd
number greater than 6, you get a 30% discount. Otherwise, you get a 20% discount. The table
shows the results of 400 customers. What is the relative frequency for each discount? Use pencil
and paper. If the manager of the store wants approximately half of the customers to receive the
20% discount, does this seem like an appropriate method? Explain.

The relative frequency for a 10% discount is?

The relative frequency for a 30% discount is?

The relative frequency for as 20% discount is?