Question: A professor starts each class by picking a number from a hat that contains the numbers 130. If a prime number is chosen, there is

A professor starts each class by picking a number from a hat that contains the numbers 1–30. If a prime number is chosen, there is no homework that day. There are 42 class periods in the semester. How many days can the students expect to have no homework?

Identify a random variable and describe its distribution before doing any computations.

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