1. Arrange students into groups. Each group needs at least ONE person who has a mobile device.
2. If their phone camera doesn't automatically detect and decode QR codes, ask students to
4. Cut them out and place them around your class / school.
1. Give each group a clipboard and a piece of paper so they can write down the decoded questions and their answers to them.
2. Explain to the students that the codes are hidden around the school. Each team will get ONE point for each question they correctly decode and copy down onto their sheet, and a further TWO points if they can then provide the correct answer and write this down underneath the question.
3. Away they go! The winner is the first team to return with the most correct answers in the time available. This could be within a lesson, or during a lunchbreak, or even over several days!
4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.
Question | Answer |
1. 1. Assume that the engine component of a spacecraft consists of two engines in parallel. If the main engine is 95% reliable, the backup is 80% reliable, and the engine component as a whole is 99% reliable, what is the probability that both engines will be operable? a.Find the probability that the main engine will fail but the backup will be operable. b.Find the probability that the backup engine will fail but the main engine will be operable. c.What is the probability that the engine component will fail?d.What is the probability that in an engine system such as that described the backup engine will function given that the main engine fails? e.Is P[backup functions]= P[backup functions|main fails] ? Did you expect these to be the same? Explain. | goodluck! | 2. 2. Assume that the engine component of a spacecraft consists of two engines in parallel. If the main engine is 95% reliable, the backup is 80% reliable, and the engine component as a whole is 99% reliable, what is the probability that both engines will be operable? a.Find the probability that the main engine will fail but the backup will be operable. b.Find the probability that the backup engine will fail but the main engine will be operable. c.What is the probability that the engine component will fail?d.What is the probability that in an engine system such as that described the backup engine will function given that the main engine fails? e.Is P[backup functions]= P[backup functions|main fails] ? Did you expect these to be the same? Explain. | goodluck! | 3. 3. Assume that the engine component of a spacecraft consists of two engines in parallel. If the main engine is 95% reliable, the backup is 80% reliable, and the engine component as a whole is 99% reliable, what is the probability that both engines will be operable? a.Find the probability that the main engine will fail but the backup will be operable. b.Find the probability that the backup engine will fail but the main engine will be operable. c.What is the probability that the engine component will fail?d.What is the probability that in an engine system such as that described the backup engine will function given that the main engine fails? e.Is P[backup functions]= P[backup functions|main fails] ? Did you expect these to be the same? Explain. | goodluck! | 4. 4. Assume that the engine component of a spacecraft consists of two engines in parallel. If the main engine is 95% reliable, the backup is 80% reliable, and the engine component as a whole is 99% reliable, what is the probability that both engines will be operable? a.Find the probability that the main engine will fail but the backup will be operable. b.Find the probability that the backup engine will fail but the main engine will be operable. c.What is the probability that the engine component will fail?d.What is the probability that in an engine system such as that described the backup engine will function given that the main engine fails? e.Is P[backup functions]= P[backup functions|main fails] ? Did you expect these to be the same? Explain. | goodluck! | 5. 5. Assume that the engine component of a spacecraft consists of two engines in parallel. If the main engine is 95% reliable, the backup is 80% reliable, and the engine component as a whole is 99% reliable, what is the probability that both engines will be operable? a.Find the probability that the main engine will fail but the backup will be operable. b.Find the probability that the backup engine will fail but the main engine will be operable. c.What is the probability that the engine component will fail?d.What is the probability that in an engine system such as that described the backup engine will function given that the main engine fails? e.Is P[backup functions]= P[backup functions|main fails] ? Did you expect these to be the same? Explain. | goodluck! |
1. Assume that the engine component of a spacecraft consists of two engines in parallel. If the main engine is 95% reliable, the backup is 80% reliable, and the engine component as a whole is 99% reliable, what is the probability that both engines will be operable? a.Find the probability that the main engine will fail but the backup will be operable. b.Find the probability that the backup engine will fail but the main engine will be operable. c.What is the probability that the engine component will fail?d.What is the probability that in an engine system such as that described the backup engine will function given that the main engine fails? e.Is P[backup functions]= P[backup functions|main fails] ? Did you expect these to be the same? Explain. &choe=UTF-8
Question 1 (of 5)
2. Assume that the engine component of a spacecraft consists of two engines in parallel. If the main engine is 95% reliable, the backup is 80% reliable, and the engine component as a whole is 99% reliable, what is the probability that both engines will be operable? a.Find the probability that the main engine will fail but the backup will be operable. b.Find the probability that the backup engine will fail but the main engine will be operable. c.What is the probability that the engine component will fail?d.What is the probability that in an engine system such as that described the backup engine will function given that the main engine fails? e.Is P[backup functions]= P[backup functions|main fails] ? Did you expect these to be the same? Explain. &choe=UTF-8
Question 2 (of 5)
3. Assume that the engine component of a spacecraft consists of two engines in parallel. If the main engine is 95% reliable, the backup is 80% reliable, and the engine component as a whole is 99% reliable, what is the probability that both engines will be operable? a.Find the probability that the main engine will fail but the backup will be operable. b.Find the probability that the backup engine will fail but the main engine will be operable. c.What is the probability that the engine component will fail?d.What is the probability that in an engine system such as that described the backup engine will function given that the main engine fails? e.Is P[backup functions]= P[backup functions|main fails] ? Did you expect these to be the same? Explain. &choe=UTF-8
Question 3 (of 5)
4. Assume that the engine component of a spacecraft consists of two engines in parallel. If the main engine is 95% reliable, the backup is 80% reliable, and the engine component as a whole is 99% reliable, what is the probability that both engines will be operable? a.Find the probability that the main engine will fail but the backup will be operable. b.Find the probability that the backup engine will fail but the main engine will be operable. c.What is the probability that the engine component will fail?d.What is the probability that in an engine system such as that described the backup engine will function given that the main engine fails? e.Is P[backup functions]= P[backup functions|main fails] ? Did you expect these to be the same? Explain. &choe=UTF-8
Question 4 (of 5)
5. Assume that the engine component of a spacecraft consists of two engines in parallel. If the main engine is 95% reliable, the backup is 80% reliable, and the engine component as a whole is 99% reliable, what is the probability that both engines will be operable? a.Find the probability that the main engine will fail but the backup will be operable. b.Find the probability that the backup engine will fail but the main engine will be operable. c.What is the probability that the engine component will fail?d.What is the probability that in an engine system such as that described the backup engine will function given that the main engine fails? e.Is P[backup functions]= P[backup functions|main fails] ? Did you expect these to be the same? Explain. &choe=UTF-8
Question 5 (of 5)