What is the term for the period of deep sadness and related symptoms following the birth of a child that affects approximately 10 percent of all new mothers for months or even years?

A professor wants to compare the test scores of his two psychology classes (Class A and Class B). Each class has 20 students

The professor calculates a t value of 2.3 and concludes that Class B has a mean test score that is significantly higher than Class A. What is the effect size associated with this statistical test? a. .12 b. .24 c. .35 d. .48

What is purposive sampling? Illustrate with an example

What will be an ideal response?