Name Date H 8.4 Extra Practice-Class Set *DON'T WRITE ON THIS* In Exercises 1 and 2, determine whether the events are overlapping or disjoint. Then state the number of ways in which A or B can occur. 1. You roll a standard six-sided die. Event A: You roll a number less than or equal to 4. Event B: You roll an odd number. 2. You spin a spinner with 10 sections, numbered 1-10, with equal area. Event A: You spin a number greater than 7. Event B: You spin an odd number less than or equal to 7. In Exercises 3 and 4, events A and B are disjoint. Find P(A or B). 3. P(A) = 0.375, P(B) = 0.2 4. P(A) = 4, P(B) = 5 In Exercises 5 and 6, you roll a die. Find P(A or B). 5. Event A: Roll a prime number. 6. Event A: Roll an even number. Event B: Roll a number greater than 2. Event B: Roll an odd number. 7. You are performing an experiment to determine how well pineapple plants grow in different soils. Out of the 40 pineapple plants, 16 are planted in sandy soil, 18 are planted in potting soil, and 7 are planted in a mixture of sandy soil and potting soil. What is the probability that a pineapple plant in the experiment is planted in sandy soil or potting soil? 8. An Educational Advisor estimates that there is a 90% probability that a freshman college student will take either a mathematics class or an English class, with an 80% probability that the student will take a mathematics class and a 75% probability that the student will take an English class. What is the probability that a freshman college student will take both a mathematics class and an English class