Question 1086347
Specify whether you will use a normal distribution, t-distribution or neither for the below examples: 
A study is performed assessing the average height of a sample of 20 5th graders. The mean height obtained in the sample was 56” and was approximately normally distributed. The sample standard deviation was 3.5”. 
------
Ans:: t-distribution because sample size is below 30.
Cheers,
Stan H.
-----------