William has 20 students take a test on two different occasions. What would be the df if he wanted to compare the mean scores from both occasions?

In thinking rationally about health statistics, it is important to remember that correlational studies do not indicate a(n) ____________________ link between the variables

Fill in the blank(s) with correct word

Which of the following is NOT an important point to keep in mind when considering career options?

a. Career choice is a developmental process that extends throughout life. b. Career decisions can be easily undone if they do not suit you. c. There are limits to your career options. d. You have the potential for success in a variety of occupations.