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
volunteer	compared to the people who are not tired	7,729	442	[]
student	Oh yes	7,729	443	[]
student	Yeah	7,729	444	[]
student	I mean, I, I think I wanna do one more problem.	7,729	445	[]
volunteer	OK	7,729	446	[]
student	Because step 5 is just deciding whether to reject the no hypothesis because with hypothesis testing, um, all I understand is that we're always working to reject the Nohapais.	7,729	447	[]
volunteer	That's right	7,729	448	[]
volunteer	Well, reject or accept	7,729	449	[]
volunteer	um	7,729	450	[]
volunteer	or I would say reject or not reject. That's the way they say it.	7,729	451	[]
student	Mm.	7,729	452	[]
volunteer	OK	7,729	453	[]
student	Yeah, I would like to do one more problem, just to understand again, step 2 and step 4 of the hypothesis testing with the samples of the knee because like	7,729	454	[]
volunteer	I'm just	7,729	455	[]
student	because um when I was doing the intro chapter, um, we had to use the same steps, but in step 2 and step 4, we had all the information we just had to compute this echo like um we were in chapter 4 in chapter 4, for instance, within divide the, um, we, we didn't like square root the variants.	7,729	456	[]
student	to figure out um	7,729	457	[]
student	the um	7,729	458	[]
student	like	7,729	459	[]
student	you know how we square rooted the train in this problem.	7,729	460	[]
volunteer	that we had to because the problem gave us the variance. The problem did not give us the standard deviation. It only gave us the variance, so we, we had to calculate the standard deviation of cells.	7,729	461	[]
student	Yeah, but in chap	7,729	462	[]
student	ter 4, it was all like all of the information was given to us, like,	7,729	463	[]
volunteer	I see	7,729	464	[]
student	Yeah, this is step 2 and step 4 kind of more tricky for me, but I don't know.	7,729	465	[]
student	I.	7,729	466	[]
student	And the standard deviation, it's also called the standard error, right?	7,729	467	[]
volunteer	Um	7,729	468	[]
volunteer	I	7,729	469	[]
volunteer	I	7,729	470	[]
student	which this chapter talks about, but we haven't like she didn't put anything about it on the test. I just studied it in case, like, we didn't talk about it in class, but I'm just asking you in general. It's also called the standard deviation, right?	7,729	471	[]
volunteer	OK, there's, there's a difference. If you have a population	7,729	472	[]
volunteer	and the population has a standard deviation.	7,729	473	[]
volunteer	then the standard error will be the standard deviation of the sample means. So to, to get, to get the standard error, you take the standard deviation and you divide by the square root of n. That is your standard error.	7,729	474	[]
student	So in this problem, we figured out the standard error.	7,729	475	[]
volunteer	Yes, we calculated the standard error, which is 0.63 I think is what we got.	7,729	476	[]
student	No, that was the standard deviation of the means.	7,729	477	[]
student	Yes	7,729	478	[]
student	I understand	7,729	479	[]
volunteer	That's, that's the standard error. We, if you look at our calculation, we started with the variants that was 20. If you take the square root of 20, that's 4.47. That is standard deviation.	7,729	480	[]
student	Yes, I got, uh, I got that part.	7,729	481	[]
volunteer	of the population, but not the standard deviation of the meat. The 4.47 is the standard deviation of the population, then.	7,729	482	[]
volunteer	then we take that and we divide by the square root of n, that is the standard error of the sample meat.	7,729	483	[]
student	Mm.	7,729	484	[]
student	I put it as standard deviation of the means.	7,729	485	[]
volunteer	or you can call it that too. If you say standard deviation of the mean, the sample mean, that is.	7,729	486	[]
student	Like I will, like what I wrote like SDM equals 0.0.63.	7,729	487	[]
volunteer	OK, yeah, you can write it like that.	7,729	488	[]
student	OK. OK, I'm, I'm gonna put one more problem, just for more practice.	7,729	489	[]
volunteer	OK, we'll do one more problem.	7,729	490	[]
student	Meal time, right?	7,729	491	[]
volunteer	Yeah, I have time. I just have to step away for 2 minutes and I'm coming right back, but you can put the problem on the board or type it for me.	7,729	492	[]
student	Oh, State College professor or something, or are you just doing this for like	7,729	493	[ { "pii_type": "SCHOOL", "surrogate": "State College", "start": 4, "end": 17 } ]
volunteer	I'm just doing this to help students.	7,729	494	[]
student	oh	7,729	495	[]
volunteer	Many people on Achieve are like that.	7,729	496	[]
volunteer	So I'll be back in 2 minutes.	7,729	497	[]
student	Yes, sir. Go ahead	7,729	498	[]
student	19. A researcher is interested in whether people are able to identify emotions correctly when they are extremely tired. It is known that, using a particular method of measurement, the accuracy ratings of people in the general population (who are not extremely tired) are normally distributed with a mean of 82 and a vari...	7,729	499	[]
student	Mm	7,729	500	[]
volunteer	OK, I'm back	7,729	501	[]
student	Yes, sir. I'm back to.	7,729	502	[]
student	Can you read the problem	7,729	503	[]
volunteer	OK. Did you type the problem? Let's see. Where is it?	7,729	504	[]
volunteer	OK, there it is. Uh	7,729	505	[]
volunteer	All right	7,729	506	[]
volunteer	But that's, that's the same problem, isn't it?	7,729	507	[]
volunteer	Yeah	7,729	508	[]
student	No, I said a psychologist is interested in the it's number 20. A psychologist is interested in the conditions after that affect the number of dreams per month that people report in which they are alone. We were doing a problem number 19 was about um.	7,729	509	[]
volunteer	OK, I see, I see problem 20 now. OK.	7,729	510	[]
volunteer	OK, I, I'm reading it.	7,729	511	[]
volunteer	All right. Arranges to test with.	7,729	512	[]
student	yeah, the two populations first.	7,729	513	[]
volunteer	OK, so 50 people who had no sleep the previous night.	7,729	514	[]
volunteer	The mean accuracy	7,729	515	[]
volunteer	for these 50 individuals who were 78 using the 0.05 level.	7,729	516	[]
student	No, no, no. This, uh, the problem that I have, let me post it again.	7,729	517	[]
volunteer	OK	7,729	518	[]
student	19. A researcher is interested in whether people are able to identify emotions correctly when they are extremely tired. It is known that, using a particular method of measurement, the accuracy ratings of people in the general population (who are not extremely tired) are normally distributed with a mean of 82 and a vari...	7,729	519	[]
student	Oh, it's the same problem. Never mind. Let me try it again. I'm trying to put a different problem and it comes up as the same thief.	7,729	520	[]
student	Sorry	7,729	521	[]
student	19. A researcher is interested in whether people are able to identify emotions correctly when they are extremely tired. It is known that, using a particular method of measurement, the accuracy ratings of people in the general population (who are not extremely tired) are normally distributed with a mean of 82 and a vari...	7,729	522	[]
student	Oh my God. No, do you want me to read the problem since it's not allowing me to pace the next problem?	7,729	523	[]
volunteer	You cannot paste it in, in the chat.	7,729	524	[]
student	No, it's not like it, it keeps pasting number 19, the one we just did. It doesn't like change.	7,729	525	[]
volunteer	Oh, I'll make sure you maybe try copying Problem 21st. Make sure it's copied	7,729	526	[]
volunteer	and then try pasting one last time.	7,729	527	[]
student	No, it's not working. It's still no problem number 19.	7,729	528	[]
volunteer	I see. OK, well, read, read the problem to me.	7,729	529	[]
student	OK. The problem says a psychologist is interested in the conditions that affect the number of dreams per month that people report in which they are alone. We will assume that based on extensive previous research, it is known that in the general population, the number of such dreams per month follows a normal curve with...	7,729	530	[]
student	The researcher wants to test the prediction that the number of such dreams will be greater among people who have recently experienced a traumatic event.	7,729	531	[]
student	Thus this psychologist studies 36 individuals who have recently experienced a traumatic event, having them having them keep a record of their dreams for a month. The mean number of long dreams is 88. Should you conclude that people who have recently had a traumatic experience, have a significantly different number of d...	7,729	532	[]
student	carry out a Z test using the 5 steps of hypothesis testing, use the um 0.05 level. Make sure and B is to make the um um draw the distribution and then see is explaining the answer to someone who had never had statistics, and then there's the 95% confident interval.	7,729	533	[]
volunteer	OK	7,729	534	[]
volunteer	All right. Well, let's start with, with our, with our data. So the in the general population	7,729	535	[]
volunteer	Yes	7,729	536	[]
student	So first I just figure out the two populations, like the population in general and um	7,729	537	[]
student	population one is population in general.	7,729	538	[]
student	general population.	7,729	539	[]
student	and population 2 would be	7,729	540	[]
student	Do you want me to read the problem again?	7,729	541	[]

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