Question: A professor using an open-source introductory statistics book predicts that 60% of the students will purchase a hard copy of the book, 25% will print

A professor using an open-source introductory statistics book predicts that 60% of the students will purchase a hard copy of the book, 25% will print it out from the web, and 15% will read it online. She has 200 students this semester. Assuming that the professor's predictions were correct, calculate the expected number of students who read the book online.

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