f 1400 students at Brown High School, 800 attended the first school dance of the year. Only 500

attended the next dance, and 300 attended both dances. A student is randomly selected. What is

the probability that the student attended the first dance or the second dance? Make sure to round

your answer to the nearest hundredth.

If the probability that person A will be alive in 25 years is 0.4 and the probability that person B will be alive in 25 years is 0.6, what is the probability that they will both be alive in 25 years?

What is the probability that person A will be alive and person B will not be alive in 25 years?

Describe the difference between dependent and independent events, and provide an example. Your example must include a graphic organizer, such as a Venn or tree diagram