WHO estimates for user stories in Scrum?

Related questions

1. Why are story points better than hours?
2. What is a purpose of the daily scrum?
3. How do you estimate story points?
4. Who writes a user story?
5. What does product owner do?
6. What are the characteristics of a user story?
7. Do product owners attend stand up?
8. What is most important according to the Agile Manifesto answer?
9. How many hours is a story point?
10. Does product owner need to be technical?

Tags

1. #developed
2. #complete
3. #resources
4. #estimate
5. #points
6. #product
7. #teams
8. #estimation
9. #story
10. #owner
11. #represent
12. #relative
13. #sizing
14. #desires
15. #wants
16. #agile
17. #stories
18. #features