Final answer:
For a one-month sprint, the sprint planning activity typically takes about eight hours, or one full working day. This can vary depending on the team's specific needs and the complexity of the project.
Step-by-step explanation:
For a one-month sprint in the Scrum framework of agile methodology, the general guideline for Sprint Planning activity duration is proportional to the length of the sprint. Sprint planning typically takes about two to four hours for a one-week sprint, which scales up for longer sprints.
Thus, for a one-month sprint, which is approximately four weeks long, the sprint planning should be expected to take about eight hours (a full working day). However, this can vary based on the team's needs, the complexity of the project, and organizational practices. It is crucial that the team reaches consensus on what can be accomplished during the sprint and sets a clear goal, making this planning phase critical to a successful sprint.