Approximately ____ of school aged children demonstrate an ...

[maychende]

Approximately ____ of school aged children demonstrate an attention deficit?
 
  a. 1-2
  b. 3-5
  c. 3-7
  d. 8-10

Question 2

An advantage of random assignment is that it
 
  a) Guarantees the influence of extraneous variables
  b) Protects the influence of extraneous variables
  c) Results in selection bias
  d) Is the simplest method

[jxjsniuniu]

Answer to Question 1

c. 3-7

Answer to Question 2

b

[maychende]

TYSM

[Dinolord]

Thanks for the timely response, appreciate it