Stimulants have been used to treat chronic pain

The between-subjects, repeated-measures or matched-subjects designs may be used when conducting experimental research

Indicate whether the statement is true or false

A population of scores is normally distributed with a mean of 100 and a standard

deviation of 20. Approximately _____ percent of the scores fall in the interval between 60 and 100. a. 14 b. 34 c. 68 d. 48