State that True or False with explanations

$$ Agile estimates are all encompassing; they should include time for documentation and testing.

$$ Agile estimates are timeboxed; once the estimates are set, they cannot be altered.

$$ Agile estimates are created by the product owner.

$$ Story points are preferable to ideal days, because story points better match estimate characteristics; they are called "stories" because not all stories are true.

$$ Agile teams create their own estimates.

$$ Risk should not be factored into user story estimates.

$$ Teams new to agile should rely on an experienced project manager to create the estimates for them.