In addition to meeting the Randomization Condition and the Independence Assumption, a 1-Sample t-Test must also meet the Nearly Normal Condition. We check the Nearly Normal Condition by making a...

In addition to meeting the Randomization Condition and the Independence Assumption, a 1-Sample t-Test must also meet the Nearly Normal Condition. We check the Nearly Normal Condition by making a histogram of the sample distribution.
What are the requirements for the shape of a histogram in order to meet the Nearly Normal Condition for each sample size range below?

1. 
   
   
   
   1. 
      

        The sample size is very small (less than 15).

      
      
   
   
   2. 
      

        The sample size is moderate (between 15 and 40).

      
      
   
   
   3. 
      

        The sample size is large (above 40).