# Probability and statistics , Week 4 , paired t-Test

**URL:** <https://community.deeplearning.ai/t/probability-and-statistics-week-4-paired-t-test/507567>\
**Category:** Probability & Statistics for Machine Learning &...\
**Tags:** week-module-4\
**Created:** [November 30, 2023, 2:20pm UTC](https://community.deeplearning.ai/t/probability-and-statistics-week-4-paired-t-test/507567 "2023-11-30T14:20:53Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![hossin\_rezazadeh](https://avatars.discourse-cdn.com/v4/letter/h/e495f1/32.png) [@hossin\_rezazadeh](https://community.deeplearning.ai/u/hossin_rezazadeh)\
**Post date:** [November 30, 2023, 2:20pm UTC](https://community.deeplearning.ai/t/probability-and-statistics-week-4-paired-t-test/507567/1 "2023-11-30T14:20:53Z")

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Hi friends I hope you are all well!  
so i had a question : in probability and statistics , Week 4 , paired t-Test , that mr.serrano taught the paired t-test and in the end we found out the mu for after the diet for our sample has increased and our H0 should be rejected , doesnt it meant that our programm for loosing weight isn’t good ? because the mu has increased?

 ![2](https://global.discourse-cdn.com/dlai/original/3X/a/8/a8ff2cb4824a3c51b88884d449b24ef21d02054a.jpeg)

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**Author:** ![TMosh](https://sea1.discourse-cdn.com/dlai/user_avatar/community.deeplearning.ai/tmosh/32/9321_2.png) [@TMosh](https://community.deeplearning.ai/u/TMosh)\
**Post date:** [December 2, 2023, 3:20am UTC](https://community.deeplearning.ai/t/probability-and-statistics-week-4-paired-t-test/507567/2 "2023-12-02T03:20:24Z")

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For how this problem is defined, a positive mu value means weight is lost.