When the standard deviation of the raw score distribution is ...

[rachel9]

When the standard deviation of the raw score distribution is negative, the
  resulting z score must be
 
  a. negative
  b. equal to 0
  c. positive
  d. none of these, since the standard deviation can never be negative

Question 2

The dependent variable in this study is (are) the
 
  a. magnesium pemoline
  b. testing conditions
  c. IQ scores
  d. there was no dependent variable in this study

[hugthug12]

Answer to Question 1

d

Answer to Question 2

c

[rachel9]

Thanks for the timely response, appreciate it

[raili21]

TYSM