Split (1)

train · 116k rows

role stringclasses 2 values	content stringlengths 0 2.1k	session_id int64 10 21.7k	sequence_id int64 0 2.38k	annotations listlengths 0 8
student	I'm doing it	7,729	342	[]
volunteer	OK	7,729	343	[]
student	So this is a directional hypothesis, right? The research hypothesis is directional, right?	7,729	344	[]
volunteer	Yes, we, we set it up in a directional or also called one-sided test.	7,729	345	[]
student	Yeah, one tilt test. So it would be um plus 1.64, right?	7,729	346	[]
student	That's the critical value, right?	7,729	347	[]
volunteer	OK, let me check	7,729	348	[]
student	Like positive 1.64.	7,729	349	[]
student	right?	7,729	350	[]
student	Cause it's 0.05, so	7,729	351	[]
volunteer	OK. 05.	7,729	352	[]
volunteer	OK	7,729	353	[]
volunteer	Let's see. Is it uh	7,729	354	[]
volunteer	is it, uh, yeah, 0.05. I'm gonna get, I'm getting my calculator.	7,729	355	[]
student	Oh, I just go with um	7,729	356	[]
student	oh, I, we just go with 1.64.	7,729	357	[]
volunteer	OK. So, but it has to be negative.	7,729	358	[]
student	Oh, OK.	7,729	359	[]
volunteer	I'm, I'm gonna show you on the board	7,729	360	[]
volunteer	I'm gonna draw the um	7,729	361	[]
volunteer	you have to draw the distribution at some point.	7,729	362	[]
student	Yeah, yeah. I, I already drew it on. I'm on step 3 and I already drew it.	7,729	363	[]
volunteer	OK	7,729	364	[]
student	I'm writing this stuff on paper.	7,729	365	[]
volunteer	OK	7,729	366	[]
student	And now we can go on to step 4. Are you ready?	7,729	367	[]
volunteer	Yes	7,729	368	[]
student	So this is where we had to like calculate the disease score and stuff.	7,729	369	[]
volunteer	Yes	7,729	370	[]
student	like the formula that we use stained glass, it was Z equals X minus the population need. Let me, let me go back to the.	7,729	371	[]
student	It was, um, no, yeah, I think it was Z equals x minus the population mean divided by the standard deviation of the means.	7,729	372	[]
volunteer	OK, but we haven't calculated the standard deviation of the mean, yet we have started it, but we haven't finished.	7,729	373	[]
student	Oh, we are in square root the 20 yet.	7,729	374	[]
volunteer	That's right. So the standard deviation of the population is 4.47, but the standard deviation of the sample meme	7,729	375	[]
volunteer	will be 4.47.	7,729	376	[]
volunteer	divided by the square root of 50.	7,729	377	[]
volunteer	That will be	7,729	378	[]
volunteer	our standard deviation to calculate the Z score.	7,729	379	[]
student	Hm.	7,729	380	[]
student	I'm doing that	7,729	381	[]
volunteer	OK.	7,729	382	[]
student	4.44.47 divided by the square root of 50, right?	7,729	383	[]
volunteer	Right	7,729	384	[]
student	See, I, I get stuck on this step, step 4 and step 2 because I don't really know like, because she said there was a difference on the in step 2 and step 4 of the hypothesis testing, then what we did in the intro chapter.	7,729	385	[]
volunteer	OK	7,729	386	[]
student	Yeah, but I, I quite don't understand the difference here I like.	7,729	387	[]
student	Do you see any difference like	7,729	388	[]
volunteer	Well, I'm not sure what your, your teacher said, uh, but everything you've, you've told me so far makes, makes perfect sense.	7,729	389	[]
student	hm	7,729	390	[]
volunteer	So now	7,729	391	[]
student	I got an answer of um 0.63.	7,729	392	[]
volunteer	OK, so let me calculate. So the	7,729	393	[]
volunteer	um	7,729	394	[]
student	The standard DV um so the sta um, so the standard deviation of the means is 0.63.	7,729	395	[]
volunteer	right	7,729	396	[]
volunteer	OK. I'm gonna calculate. So this is called the	7,729	397	[]
volunteer	uh, this	7,729	398	[]
volunteer	the test statistics.	7,729	399	[]
student	I don't know what happens, but in the exams, like I get nervous somehow and I get tricked up like I feel like it's trickier.	7,729	400	[]
volunteer	Mhm	7,729	401	[]
student	because with if she allows corrections, but um it's not like	7,729	402	[]
student	I don't know. I, I get stuck with this chapter for some reason, like I had problems understanding this chapters and understanding this chapter because we had to like learn it quickly, kind of.	7,729	403	[]
volunteer	Right	7,729	404	[]
student	Yeah, she just, um, she just spent two days with it. We didn't even spend too much time, but the two problems solving questions were from this chapter, like it gave me the standard deviation and uh me or something in population, and then it	7,729	405	[]
student	yeah, and with the, and then it gave me the significance level.	7,729	406	[]
student	That's it	7,729	407	[]
volunteer	OK	7,729	408	[]
student	And then um maybe the um, the big game, the sample me. I don't remember exactly what was on the exam, but it was tricky.	7,729	409	[]
volunteer	So tell me again what number did you get for the, uh, the Z score that for the test statistics.	7,729	410	[]
student	What the standard deviation of the means?	7,729	411	[]
volunteer	No, you, you, you, you calculated the Z score, just, just a minute ago. You gave me the number.	7,729	412	[]
student	There was 0.63 was the standard deviation of the needs, so.	7,729	413	[]
volunteer	Right	7,729	414	[]
volunteer	OK, now we have to calculate the the Z score for the test statistics.	7,729	415	[]
volunteer	Sure	7,729	416	[]
volunteer	OK	7,729	417	[]
student	I calculated. I know. I, I know how to do it now. It's	7,729	418	[]
student	and um the big game is also called the sample main is also like the eggs, right?	7,729	419	[]
volunteer	OK	7,729	420	[]
student	I'm asking you, is it the sampling is like a raw score?	7,729	421	[]
volunteer	No, uh, the, uh, we don't know the rascal. It's, it's similar to the Z score score, uh, but that's, that's what we're gonna be using. We're gonna be using it as a raw score and in our case it's 78.	7,729	422	[]
student	OK	7,729	423	[]
student	Because in my formula, I wrote like X minus the population of the means divided by the standard deviation of the meter.	7,729	424	[]
volunteer	Yes, that's the general formula for the Z score. In our case, the X is similar to the 78. The mean is similar to the 82 and the standard deviation that we already calculated is it becomes our 0.63.	7,729	425	[]
student	Mm	7,729	426	[]
student	OK.	7,729	427	[]
student	So in this case, our X would be 78, right?	7,729	428	[]
volunteer	Right.	7,729	429	[]
student	OK. So	7,729	430	[]
student	minutes 2.	7,729	431	[]
student	divided by 0.63.	7,729	432	[]
student	OK	7,729	433	[]
student	It you	7,729	434	[]
student	I got 6.35.	7,729	435	[]
student	No, 6.35.	7,729	436	[]
volunteer	OK, that's fine	7,729	437	[]
student	So that shows, that falls on the area of rejection, right?	7,729	438	[]
volunteer	Uh, very much so. We're, we're far, far to the left of the rejection area.	7,729	439	[]
student	We would reject the no hypothesis.	7,729	440	[]
volunteer	It would reject the null hypothesis, and we would conclude that people who are tired are definitely they perform badly	7,729	441	[]

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