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Determine if the following events are independent. Robert checks out a book from the library. Rebecca...

Determine if the following events are independent.

Robert checks out a book from the library. Rebecca receives a letter from her cousin.

Math   Statistics-And-Probability   
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Answer #1

These two events are independent.

1 st event doesn't depend  upon the second one . Robert checks out a book from the library is the 1 st event. And Rebecca receives a letter from her cousin is the second event. These two events are not dependent.

Dependent event means any change in the one event affect the another event. So from our example we can see that receiving a letter and checks out a book from the library have no common factor . And they are independent.

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