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volunteer
and uh
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volunteer
no, so the, that's called the null hypothesis, always has to have an equal sign.
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volunteer
So it's gonna be
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volunteer
mutual
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volunteer
no
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student
We don't, we don't do that, sir. Sorry. We don't put an equal equal sign or anything. Like we don't even use the smaller dens sign. We don't use all of that.
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volunteer
Uh, that's for H1, smaller than, you see what I wrote for H sub 1.
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student
Yeah, we don't, we didn't use that.
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student
when we were starting this chapter.
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volunteer
You didn't use that one.
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student
We just startedly stated, we just directly stated the research and the no hypothesis from the two populations being compared.
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volunteer
So maybe you wrote it like this.
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volunteer
In fact, I'm gonna write the number, the number is 82. That's, that's the um
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volunteer
I'm gonna write it like this, 82.
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volunteer
So is that OK
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student
Yeah, like, like we actually stated the no and the research hypothesis. Instead of using less than or equal to or greater than or equal to based on the population mean. We didn't, we actually roast like stated it in words like people.
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student
who
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volunteer
Oh, in work, OK. Well, we can do that. We can do that. I can write it in words.
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volunteer
OK
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student
like people who are who are not tired, will
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student
you know.
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volunteer
Yeah, we can do that. Let me, let me write it. OK, I'll write it here, then I'll move it. So H
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volunteer
H 0 and then H sub 1 we can say.
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student
No, I want, I want you to do the H sub 1 first because that's how we do it. I don't want you to flip around because then I'll get confused in my head.
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volunteer
OK, so
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volunteer
the
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student
I want to start with the research hypothesis.
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volunteer
yeah, OK. So the mean of the tired
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volunteer
pop.
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volunteer
population is less than 82.
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volunteer
So that would be our research hypothesis.
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volunteer
Is that OK
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volunteer
So we wrote it in word now.
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student
No, like you to add it from the like, I don't know how to describe it, but we like, we were people who are not tired or something, something. We were based on the population. That's how I write it
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student
so
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student
people who were not.
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volunteer
OK, well, tell, tell me how you want to write it.
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volunteer
or I can put it this way, the
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volunteer
the, the tired population.
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volunteer
has
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volunteer
um
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volunteer
mean
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volunteer
less than 82.
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volunteer
and 82 is the mean of the first population.
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volunteer
Is that, is that better
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student
So I put it like people who are not tired are able to identify emotions correctly, then people, um, and then the more hypothesis would be that people who are extremely tired, will not be able to identify the emotions corre um correctly.
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volunteer
Yeah, you can, you can do that. It's saying the same thing. You're just using words to say the same thing.
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student
Oh
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student
because I've didn't write it the way you wrote it, so.
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volunteer
OK.
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student
Like that would be, this is my first step
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student
In the hypothesis testing.
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volunteer
Yes
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student
I'll let you know, um, uh, once I write those two hypothesis, how I've written out.
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volunteer
OK
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student
So I wrote for the research hypothesis, which is 8 of 1. I want people who are extremely tired, will not be able to identify emotions correctly. And then for the no hypothesis, I wrote people who are extremely tired, will be able to identify emotions correctly.
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volunteer
OK, yeah, sure. You can say it that way. That works.
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student
And then step 2 is id is determining the characteristics of the um comparison distribution.
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volunteer
OK
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student
So that's, that's where we had to write all of our numbers down, right? Like the population mean
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student
the standard deviation
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volunteer
Right
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student
the, and the sampomine which is 78.
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volunteer
Where'd you see 38?
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student
No, I said 78, sorry.
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volunteer
OK, yeah, 78 is the sample mean. 50 is the sample size.
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student
Yeah
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volunteer
So we can write that. So the distribution, here's the distribution of group 2.
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volunteer
correct.
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student
So I just write those numbers like the characteristics for it.
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volunteer
Mhm
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student
That's nice
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student
OK, I got them all down. This, the, the population mean is 82. The standard deviation is 20. The sample size is 50, and the same and the BM is 78.
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volunteer
The big M
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student
Yeah, like the, it's called the samplemi.
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student
OK.
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volunteer
the sample mean, OK, all right. Maybe one thing.
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student
I began.
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volunteer
something you could calculate because we're gonna need it is this right now we only have the variants, which is 20.
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volunteer
Maybe we can calculate
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volunteer
the standard deviation.
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volunteer
Can you take
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student
Oh, I thought that standard deviation was 20.
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volunteer
No, it says it's the variants. If you read the the problem.
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student
Yeah.
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student
Yeah
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volunteer
so to get the standard deviation, we have to take.
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student
Oh, we are too. I know we are, I know what we have to do. We have to divide 2 by the square root of 50.
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volunteer
Uh, it wouldn't be 20, it would be, well, first of all, let's calculate the standard deviation first, which is square root of
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volunteer
20
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volunteer
and that is
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volunteer
for
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student
First, let's go to figure out, um, figure out the critical value in step 3.
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student
cause that comes in step 4.
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volunteer
oh OK
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student
Step 3 is like you have to determine the cutoff score at which the no hypothesis should be rejected.
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volunteer
OK
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volunteer
All right
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volunteer
So to do that
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student
point musically P um is less than 0.05. So,
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