00:02
Hello there.
00:03
I see that you have a list of questions and we'll go over each of them.
00:07
In the two sample case, the null hypothesis is always about the differences in the what population, samples, standard errors, or all of the answer choices.
00:22
Which one do you think it is? if you said a, you are correct.
00:29
The next question.
00:31
A poll estimate.
00:32
What does that mean when you think of a pull estimate? is it that it compares two different populations, combines two different populations, combine information from two samples, or is the mean of two standard deviations? if you said it combines information from two samples, you are correct.
00:58
The next question, for testing the difference between two samples, means the level of the measurement is assumed to be what nominal ordinal interval dash ratio or any of the choices of the answer choices that i've just listed which one do you think it is if you said interval ratio you are correct the next question when testing for significant i mean significance of the difference between two sample means, which parameters must be estimated with sample values? is it the population standard deviation? the population means the standard deviation of sampling distribution or the alpha value.
01:52
If you said the population mean, you are correct, or population means, i forgot to put it is.
02:02
But we get that this right...