Fifteen people in a upper group consisting of 25 people get an ...

[tnt_battle]

Fifteen people in a upper group consisting of 25 people get an item right and 5 people in a lower
  group of 25 people get the item wrong. The item has a difficulty index of __________ and a
  discrimination index of __________.
 
  A) .60, .20 B) .40, .20 C) .80, .40 D) .40, .40

Question 2

The first group intelligence test was based on the work of Arthur Otis.
 
  Indicate whether the statement is true or false

[Chelseyj.hasty]

Answer to Question 1

D

Answer to Question 2

TRUE