Introduction to Probability and Venn Diagrams

Questions

• 1Question 1, not started
• 2Question 2, not started
• 3Question 3, not started
• 4Question 4, not started
• 5Question 5, not started
• 6Question 6, not started
• 7Question 7, not started
• 8Question 8, not started

• Question 1 of 8 · Intro

  Up nextNot started

  Complement of an Update

  The probability that a device needs an update is 0.18. What is the probability that it does not need an update?

• Question 2 of 8 · Intro

  Not started

  Event Token Probability

  A bag contains 20 equally likely event tokens, and 7 tokens show a star. What is the probability that a randomly selected token shows a star?

• Question 3 of 8 · Core

  Not started

  Club Membership Union

  In a group of 40 students, 18 joined the coding club, 14 joined the design club, and 6 joined both. If one student is selected at random, what is the probability that the student joined at least one of the two clubs?

• Question 4 of 8 · Core

  Not started

  Exactly One Course

  In a cohort of 50 students, 24 take economics, 19 take programming, and 7 take both. What is the probability that a randomly selected student takes exactly one of the two courses?

• Question 5 of 8 · Core

  Not started

  Neither Newsletter

  Among 45 subscribers, 20 read the morning newsletter, 18 read the evening newsletter, and 8 read both. What is the probability that a randomly selected subscriber reads neither newsletter?

• Question 6 of 8 · Core

  Not started

  Recovering an Intersection

  For two events A and B, P(A) = 0.48, P(B) = 0.39, and P(A union B) = 0.72. What is P(A intersection B)?

• Question 7 of 8 · Core

  Not started

  Transit Pass Union

  In a survey of 80 commuters, 35 use a bus pass, 32 use a rail pass, and 12 use both. What is the probability that a randomly selected commuter uses at least one of the two passes?

• Question 8 of 8 · Core

  Not started

  Workshop Attendance Union

  Of 50 participants, 23 attended a writing workshop, 21 attended a speaking workshop, and 9 attended both. What is the probability that a randomly selected participant attended at least one workshop?