Eighteen participants took part in an experimental study that consisted of three levels: normal classroom teaching, normal classroom teaching with tutors, and an experimental teaching method to...

Eighteen participants took part in an experimental study that consisted of three levels: normal classroom teaching, normal classroom teaching with tutors, and an experimental teaching method to increase student scores on a statistics exam. Your data set includes the following variables:

• Treatment
  
  
  
  • (1 - normal classroom teaching; 2 - normal classroom teaching with tutors; 3 - experimental teaching method)
  
  
  
  


• Gender
  
  
  
  • (1 – female; 2 – male)
  
  
  
  


• Pre-test score
  
  
  
  • (higher scores represent better student performance on a statistics exam)
  
  
  
  


• Post-test score
  
  
  
  • (higher scores represent better student performance on a statistics exam)
  
  
  
  


• Stanford-Binet Intelligence Test scores (IQ)


• The number of hours the student studied per week.

Do test scores at pre-treatment differ from test scores at post-treatment? Note, this analysis should be conducted ignoring the treatment group they are in.

Select an appropriate statistical test and state teh hullhypothesis.