A health psychologist claims that the more final exams a...

A health psychologist claims that the more final exams a student has during finals weeks, the more stressed they are. They want to test this experimentally by randomly assigning 100 students to receive additional final exams and then assessing motivation, and another 100 students receive no additional final exams and are assessed on their motivation. = mu1 = Additional finals and = mu2 = No additional finals What would be the null and alternative hypotheses? Please select all that apply. Answer choices [H1, p not equal to 0 | H0, P = 0] [H1, p > 0 | H0, P < or = 0] [H1, mu2 - mu1 < 0 | H0, mu2-mu1> or equal to 0] [H1, mu2 - mu1 not equal to 0, H0, mu2-mu1= 0] [H1, mu2 - mu1 > 0 | H0, mu2-mu1 < or equal to 0] [H1, mu1 - mu2 > 0 | H0, mu1-mu2 < or equal to 0] [H1, mu1 - mu2 < 0 |H0, mu1-mu2 > or equal to 0] [H1, mu1 - mu2 not equal to 0 | H0, mu1-mu2 = 0] [H1, p< 0 |H0,p > or equal to 0]

Transcript

00:01 We have a psychologist that claims that the more final exams a student has during finals week, the more stressed they are.

00:07 And they want to test this experiment by assigning 100 random students in each of two groups.

00:16 And the two groups are, group one will say this is the group that gets additional finals, so they get more finals.

00:27 And then group two, this is group one, group two will group two, they have no additional finals.

00:34 No additional finals.

00:42 And i guess just to be sure, we're using the same verbiage here.

00:45 Group one would have additional finals rather than more finals.

00:48 It's nice to have clearly defined, the only difference being yes, additional finals, no additional finals.

00:55 And then you're going to be assessing the sample mean on some motivation survey.

01:03 And you're going to get x bar one, x bar two here.

01:07 And we're looking for the more stressed, they're more stressed.

01:15 And so what we're measuring is motivation.

01:22 So we're looking at motivation.

01:28 And so motivation relating to stress.

01:31 And so we're going to state the null and alternative hypotheses.

01:36 Well, if this is the motivation, i guess this is kind of interesting question, because you're having to say, okay, if you have more stress, if you're more stressed, are you more motivated? or are you less motivated? and so that's a kind of a doozy of a question.

01:50 That's almost you could set a, that's another experiment in itself.

01:55 But let's assume, let's just go ahead and assume that if you're, if you are very stressed, we'll associate very stressed, we'll associate very stressed with a decrease in motivation.

02:27 Because there's nothing in the problem statement that says what you're, how the psychologist claims that stress relates to motivation.

02:46 And so we're going to make this, we're going to make this definition.

02:50 Very stressed would mean a decrease in motivation.

02:55 Make that claim.

02:56 All right, so now we can state our hypotheses...

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