This is a screenshot question from a data management textbook question

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7 a; b

4. If Billy run into James and Jimmy in the hallway between periods 2 and 3, there is a 35% chance that she will be late for class. If she does not bump into Troy, she will make it to class on time. If there is a 20% chance that Juanita will bump into Troy, how likely is it that she will be on time on any given day? (3 - A) 5. Of 150 workers surveyed in an industrial community, 65 worked in the paper mill and 30 worked in the water-treatment plant. a) What is the probability that a worker surveyed at random works in the paper mill or the water treatment plant? ( 3- A) b) What is the probability that a worker surveyed at random works somewhere other than the paper mill or the water-treatment plant? (1 A)7. Five siblings, Paula, Mike, Stephanie, Kurt, and Emily, are randomly seated along one side of a long table. What is the probability that the children are seated a) with the three girls in the middle? (3 T) b) in order of age? (2 T)