FAQ: Hypothesis Testing - One Sample T-Test II


This community-built FAQ covers the “One Sample T-Test II” exercise from the lesson “Hypothesis Testing”.

Paths and Courses
This exercise can be found in the following Codecademy content:

Data Science

FAQs on the exercise One Sample T-Test II

Join the Discussion. Help a fellow learner on their journey.

Ask or answer a question about this exercise by clicking reply (reply) below!

Agree with a comment or answer? Like (like) to up-vote the contribution!

Need broader help or resources? Head here.

Looking for motivation to keep learning? Join our wider discussions.

Learn more about how to use this guide.

Found a bug? Report it!

Have a question about your account or billing? Reach out to our customer support team!

None of the above? Find out where to ask other questions here!


In this exercise, we expect the population mean to be 30 but the mean of our sample is 31. So wouldn’t our null hypothesis be “the sample represents a population of mean 31” Am I right? Then we go on and use test_1samp(distribution, 30) to find p value. I am confused. What are we checking for in this hypothesis test? Are we checking If the sample represents a population of mean 30? If so, if it is less than 0.05 then does it mean it represents a population of mean 30?


Although delayed, I have posted a response to your question. Please check here.