Hypothesis Test: Difference in Population Means, Standard Deviations Unknown

In this video we estimate the difference in population means between two populations of interest.
In many examples, we will consider the difference of the two populations to be equal to zero, suggesting that there is no difference between two populations.
In my complete hypothesis test example, we collect data to try and determine whether or not using a calculator on an exam gives any noticeable advantage on an exam.
Notice that this hypothesis test is extremely alike to the other hypothesis tests; we simply compute a test statistic and also look up a value in a table and compare them. That's it.
This test is something one could expect to see in a typical course on statistics or data science, and would a sufficient refresher for a typical type of question on could see on the AP Statistics exam.

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[ravikiran]

I always thankful to you sir.Long back ago i watched your videos to clear my subject.Now i am working as aerospace engineer.

[patrickjmt]

This is a fundamental topic in statistics and one of the topics those of you taking the AP test will see!

[Randomlogy]

hey sir just came to say thank you although now i am Chartered Accountant and Don't practice math anymore. but back in class 12th i used to watch your videos to learn calculus.i was top performer in math and my math score helped me secured 2nd position in whole province in board exam. today while traveling in bus, i refered your channel to my Younger cousin. it's just nostalgia. thank you . hope see you in future.