Researchers asked students at various stages in their educational career whether they support the building ofa mall in Elk Grove. Middle School 7 19 High School 8 2 10 You can leave your answers as fractions. You also don't have to reduce the fractions. (Ex. E ) a. If one student is selected, nd the probability that the student is in college. D b. If one student is selected, find the probability that the student is in middle school and the student answered "No." D c. If one student is selected, find the probability that the student is in high school or the student is "Undecided." D d. If one student is selected, nd the probability that the student did not answer "No." D e. Let A be the event that the student is in college. Let B be the event that the student answered "No." Are A and B mutually exclusive? Explain. To decide, we have to calculate Select an answer v which in this problem is equal to We conclude that A and B are Select an answer V , because Select an answer V 1'. Let A be the event that the student answered "Yes." Let B be the event that the student is in high school. Are A and B mutually exclusive? Explain. To decide, we have to calculate Select an answer v which in this problem is equal to We conclude that A and B are Select an answer V , because Select an answer V Researchers collected data on students' class standing and how they did in their English class. Pass Fail Withdraw Freshman 2 10 1 Sophomore 7 1 3 Junior 1 10 15 Senior 20 9 3 You can leave your answers as fractions. You also don't have to reduce the fractions. (Ex. 10 12 a. If one student is selected, find the probability that the student is not a junior. b. If one student is selected, find the probability that the student failed or the student was a junior. c. If one student is selected, find the probability that the student failed. d. If one student is selected, find the probability that the student withdrew and the student was a sophomore.e. Let A be the event that the student is ajunior. Let B be the event that the student withdrew. Are A and B mutually exclusive? Explain. To decide, we have to calculate Select an answer v which in this problem is equal to We conclude that A and B are Select an answer v , because Select an answer In a statistics class of 99 students, there are 35 freshmen and 64 sophomores. There are 7 freshmen who are left-handed and 16 sophomores who are left-handed. Of the 63 right-handed students in the class, 44 are sophomores. _I:IEIEI 10 You can leave your answers as fractions. You also don't have to reduce the fractions. (Ex. E ) a. If one student is selected, nd the probability that the student is ambidextrous. :l b. If one student is selected, find the probability that the student is a sophomore or the student is left-handed. D c. If one student is selected, nd the probability that the student is a freshman who is right- handed. l:l d. Let A be the event that the student is ambidextrous. Let B be the event that the student is a freshman. Are A and B mutually exclusive? Explain. To decide, we have to calculate Select an answer v which in this problem is equal to We conclude that A and B are Select an answer v , because Select an answer v
