# Each student in a certain high school was classified according to her year in school (freshman, sophomore,

## Question:

a. If a student selected at random from the high school is a junior, what is the probability that she has never visited the museum?

b. If a student selected at random from the high school has visited the museum three times, what is the probability that she is a senior?

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**Related Book For**

## Probability And Statistics

**ISBN:** 9780321500465

4th Edition

**Authors:** Morris H. DeGroot, Mark J. Schervish