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What to select when?

What to select when?

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1
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Z-distribution
 
. Sample size is large (more than 50?) 
. Population normally distributed (approximately) 
. Population variance known 
 
t-distribution 
. sample size small (less than 50?) 
. population variance unknown 
 
Am I right or is there any other criteria?  

1 Answer

365 Team
0
Votes

Hey Chitra!
 
You are right! This is a point we make in one of the lectures as well!
 
Best,
The 365 Team

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