Unknown Story

Opret din egen! Kopi

Hey, Lian. I'd like to ask you something. Can I?
Yeah, sure. Go ahead.
Let us say that the population variance is known, has normal distribution, 𝑛 ≥ 30, and the population standard deviation is known. What would be the appropriate test statistic shall I use?
Cool, thanks!
z-test
Hello, Zach. Would you mind if I ask you a question?
No, what is it?
I have a situation wherein the population variance is unknown, the population is normal or nearly normally distributed, 𝑛 30, the sample standard deviation is known, and the population standard deviation is unknown. What do you think is the appropriate test statistic shall I use?
Okay, thanks!
t-test
Hi, Macy. Do you think you could spare me a minute?
Of course. What would you like to talk about?
Well, let's say that the Central Limit Theorem is used, the population may not be normally distributed, 𝑛 ≥ 30 or considered sufficiently large, and the variance may be known or unknown. What do you think is the appropriate test statistic shall I use?
Great, thank you!
You should use z-test by replacing population standard deviation (𝜎) by sample standard deviation (𝑠) in the formula.

Over 40 millioner storyboards skabt

Ingen Downloads, Intet Kreditkort og Intet Login Nødvendigt for at Prøve!