i love u maam Enad
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- By the way, what did you guys do or what lesson that have been discussed?
- Uh, I didn't wake up at the right time. I woke up late, that's why I am absent today.
- Let's take a walk together, and I will discuss it to you.
- Uh, okay.
- Hey bro, why are you absent today?
- Test Statistic is a random variable that is calculated from sample data and used in a hypothesis test. It can help you determine whether to reject or accept the null hypothesis.
- There are different types of test, the Z-Test, T-Test, and the Central Limit Theorem. To identify what kind of test that you will use, you must identify the given first.
- Our Statistics and Probability teacher discussed about the Appropriate Test Statistics Involving Population Mean.
- Yeah, sure.
- Can you discuss it for me?
- Uh, okay.
- Hi there! Where did I stop?
- I will give you an example, if the population standard deviation is known, the sample standard deviation is unknown, and the sample size is greater than 30, you will use Z-Test. If the population standard deviation is unknown, sample standard deviation is known, and the sample size is lesser than 30, you will use T-Test. And, if the variance is known, sample standard deviation is known, and the sample size is greater than or equal to 30, you will use Central Limit Theorem.
- Uhmm... about the types of test, I guess.
- Uh, okay.
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