1. How do you get the degrees of freedom for a one sample t test? 2. what is the difference between saying there is a signficant reatment effect and effect size? 3. What is the relationship between Alpha and Beta? Solution 1 ) degrees of freedom = sample size - 1 3 ) alpha = type I error rate = significance level under consideration that the NULL hypothesis is correct Beta = type II error rate.

1. 1. How does having a scope and WBS help project teams during project execution? Why is it
difficult to develop good plans?
2. Name the main planning tasks performed as part of project integration management? What
are the main documents created, and what should they contain?
3. Identify the planning tasks performed as part of project time management. What is the critical
path for a project? Why is it important to know which tasks are on the critical path? How would
you gain support from the project sponsor on the tasks on the critical path?
4. During project cost management, what are the main planning tasks performed? Identify the
difference between a cost estimate and a cost performance baseline. Why is it important to have
clear ground rules and assumptions for a cost estimate?
Solution
1. How does having a scope and WBS help project teams during project execution? Why is it
difficult to develop good plans?
The main purpose of project planning is to guide project execution. To guide execution, plans
must be realistic and useful, so a fair amount of effort must go into the project planning process
(Schwalbe, 2013).
Planning is often the most difficult and unappreciated process in project management because
people often do not want to take the time to plan well, but theory and practice show that good
planning is crucial to good execution (Schwalbe, 2013).
2. Name the main planning tasks performed as part of project integration management? What are
the main documents created, and what should they contain?
Project integration management involves coordinating all the project management knowledge
areas throughout a project