There are slips of paper that are numbered from 1 to 15 in a hat. What is the theoretical probability that a slip of paper that is chosen will be an even number?

The numbers from 1 to 15 include 7 even numbers: 2, 4, 6, 8, 10, 12, and 14. The probability is the number of favorable outcomes divided by the total number of slips, so it is 7/15. The correct choice is 7 over 15.

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