A student has a score of 80 on a class test with a score reliability of .84 and a standard deviation ...

A student has a score of 80 on a class test with a score reliability of .84 and a standard deviation of 10 . What is the band within which the student's true score is likely to fall? (Use the .95 confidence level).
 
  a. 70 and 90 c. 75 and 85
  b. 72 and 88 d. 76 and 84

Ques. 2

(WWW) Which of the following would be the least acceptable research design?
 
  a. Posttest only, control group design
  b. One-group pretest-posttest design
  c. Pretest-posttest control group design
  d. Matched subjects, posttest only, control group design

Ques. 3

You are considering two tests to be used for selection into a class for gifted students. Test A has a mean of 85, standard deviation of 10, and a score reliability of .91 . Test B has a mean of 85, standard deviation of 8, and a score reliability of .75 . On which test would a student's score be expected to fluctuate more on repeated administrations?
 
  a. Test A b. Test B