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Biology researchers use the criterion of between twO assess the result to conclude that a relationship categorical variables is statistically significantSelect one:...

Question

Biology researchers use the criterion of between twO assess the result to conclude that a relationship categorical variables is statistically significantSelect one: a.99b.0.10.05d.no criterion

Biology researchers use the criterion of between twO assess the result to conclude that a relationship categorical variables is statistically significant Select one: a.99 b.0.1 0.05 d.no criterion



Answers

A researcher calculates statistical significance for her study and finds a 5 percent chance that results are due to chance. Which of the following is an accurate interpretation of this finding? a. This is well beyond the range of statistical significance. b. This is the minimum result typically considered statistically significant. c. This is not statistically significant. d. There is no way to determine statistical significance without replication of the study. e. Chance or coincidence is unrelated to statistical significance.

So a correlation. All study is non experimental, so it's non experimental, and it looks at kind of the relationship between two variables or more than two variables but the relationship or the possible relationship between two or more variables. But it is not manipulated so that it's not an experimental, so you're not manipulating. There's no independent or dependent variable. It's just looking at the relationship of the possible relationship between the two variables or the more than two variables, So that is a correlation ALS study.

Everyone. So this question is asking us what? But what values off what P values would cause a rejection of fictional when we're looking at not me five level of significance. So just visualize that you really quickly when you draw because so this question is giving us a notebook problem significant. So I'm just gonna draw that on here. And so this area here is no 0.5. Yeah, So just the question. Also specify this is the one tail her bosses test. So this is why this is down at one end. So we've got a number five. That's are not point not fired area here. We want to know what calculated values off P. The P value is gonna make us reject occasional. And so if we remember the important role that in order to reject Asian are, um hey, h no, really pay to be less than a week to Alfa, so we won't pay to exist in in this area here. Yeah, and so the values of P that calls a rejection is gonna be P less than or equal to no point No. Five. It's a simple and so the second question is a very similar. It's actually it's about what to tell tests. So we've got two different sides to this. Funny should be symmetric. If I can vaguely do that, they go to tell tests that's being tested a lot point not to level significance. And so because, um discovers the metric on, we're always looking at this being symmetric in the negative and positive. We're gonna have no point, not one on either side. So this is not point, not one, and this is no point no one. And so we asked what calculated values API will make us, um, failed to reject Pagenaud. So if we think back again, using theme opposite of this rule here, we failed to reject hate knots when P is greater than other. And so, in this case, Alfa is no point not to, but because it's a two tailed test was splitting that in half. So a P value to be significant would have to be within this. No point. Not one on this is gonna be sort of in the negatives, or it could be in this not quite no one. So in reality, we're looking at values off pay are great to the no point warm because even if you had, say, a value off, so that so that this is this. The property of this here is no point no 15 So that's greater than no point, not one. But it is less than this original Alfa because this is still split into two. It doesn't mean that this is significant, because it's not rare enough that this was a one tail test. Not point not to level of significance than this will be significant. But it's not. So we're looking at this answer right here.

We have a hypothesis test with P values 0.083 for are observed data. We want to determine for each of the alphas or the significance values below whether or not our P value enables us to reject the null hypothesis each not before getting started. Let's remember a critical definition. You can reject the null hypothesis, H not whenever P is less than or equal to alpha. So whenever your P value is less than or equal to your significance level. Now implementing this in part A We have that 0.083 is greater than alpha equals 0.05. That means that P is greater than alpha. So for part a we do not reject the null hypothesis. For part B, alpha equals 0.1, 0.083 is less than or equal to 0.1. So in this case P is less than or equal to alpha. And we were able to reject the null hypothesis. Finally, for part C 0.083 is actually greater than the alpha value here of 0.06. So again P is greater than a, and once again we do not reject the null hypothesis.

Everyone s. So we're gonna be looking at the importance off a level of significance. Andi, I've been talking about this a lot in the last week of videos, and essentially, this question has given us a P value, which is no point No. Eight for So I was gonna put that hair removal grass. So this area under here that I'm clearing in is nor point no hateful. All right? And we would get this because this extreme him be that star on dso we've been given to pass this question one which gives us I bought this test completed and not put five levels Significance. And one on not 10.1 level. Significance 0.5 is gonna be about here. You know, you can see this sort of thing happening. I am not. 0.1 is gonna be Yeah, there. And so I'm sure people will be able to see where we're headed with this question. Both guys blood, It's not going. Okay, Okay. So I'm gonna have what's one Alfa two? Why off to is no quick one on one Ismael point No. Five. So Okay, that's being understand what's happening here. Even though there's some sort of would scribble going on. So the first question is asking us on the what decision will be made when we have these two different significance levels. So you're looking firstly at this one here. So this enough, it's level is not put five on our property value is not point no. 84 And so we're gonna actually sail to reject a channel in this case, somebody disagreeing just to show that it's willing to. This this one so failed to reject. And that's because thes significant level is requiring a much greater level of rare. Nous is the best way I can describe it in terms of being easy to understand. It's not the best technical language, but it's easier to think. OK, it's rarer. 20 Role five. Um, that's right. So if you're gonna flip a coin, it's riders. We're gonna get five heads in 100. The nays to get 10 heads in 100 right? It's thought different on both would seem pretty rare, but it's about how you want it to be in order things for these again. And so what? We've got significant level of not quick note five. We're asking things to be at least is rare as 5%. And so we're fighting to reject fictional because this is an 8% chance. Where is when we have a significant level off? No 0.1 were rejecting a channel, and that's because we're only asking things to have a sort of 10% chance of happening. We're asking them to be that rare or more rare. And this is, you know, more rather than looking one. So this is going back to a classic rules that if peace lesson x alfa, then we reject ation all Andi, If he is great at Alfa, well, you don't, so they have it.


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