Chapter 11.3, Problem 10PPSE

Solution

To find if the given events are dependent events or independent events.

The events are dependent events.

Given information:

A month is selected at random; a day of that month is selected at random.

Concept:

When the outcome of first event affects the outcome of other event then the events are dependent whereas when the events do not affect each other, then the events are independent.

Explanation:

Here outcome of first event affects the outcome of the other as outcome of first event will decide the number of days in the second event. It may be 30, 31 or 28 in case of February. Hence the events are dependent.

Conclusion:

Hence, the events are dependent events.