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Question 31 pesWhich hypothesis must always contzin claim af equality? Which hypothesis never tloes?...

Question

Question 31 pesWhich hypothesis must always contzin claim af equality? Which hypothesis never tloes?

Question 3 1 pes Which hypothesis must always contzin claim af equality? Which hypothesis never tloes?



Answers

A hypothesis cannot be formed without which of the following? a. experimentation b. observation c. data d. theory

Hypothesis of this is going to be It rains on Monday in the conclusion I will stay home.

In this problem, we're going to be considering the hypothesis. Testing the first exercise number one and in the first part of this problem will contribute, identifying the non hypothesis and the alternative hypothesis. So we're given that they're two groups off Children. The first group receives the South vaccine on the second group receives the placebo, and the null hypothesis for this would be it's not. P one is equal to p two. Here we assume that the two proportions are equal, and the alternative hypotheses would be p one ISS less than Pete, too, because in this case, the clean is that the student? The the claim is that the rate off polio is less for Children given the silk vaccine than for Children given the placebo. So that's why we say that p one ISS less than P two. Because P one is a writ, uh, is the proportion for for the sulk vaccine and pre two is a proportion for the placebo. Next, in part b of the question we're told to, we're told that the P value for the test waas less than 0.0 one, and therefore we need to make a conclusion about the original claim. So and when we look at the value off P, the P value, it is 0.1 and that is a low P value and for low P value. We have to make the decision to reject the null hypothesis. And when we reject and I like where this is because the P value is very small, we can then conclude that there is sufficient evidence to support a clean that the writ off polio is less for Children given the South vaccine, then for Children, given the possible so that would imply that the sulk vaccine appears to be effective, so the sock vaccine appears to be effective.

Now in this question we are addressing what is a scientific theory. Okay. First of all, a lot of people use theory and they go, oh I think that this is my theory and they think that it's not a guess. Okay, first of all not I guess scientific theory okay. Is part of the scientific method kind of like at the bitter end it starts as a hypothesis. So you made an observation of some natural phenomenon. Okay. That observation made you ask a question. Okay that you maybe you wanted to find the answer to that question uh made you do some research to find out things about that question. And based on that research and everything you find out in your observations. You came up with your hypothesis. But the scientific method doesn't end there. After you do your hypothesis right? You will make a prediction based on your hypothesis. Okay. Um then after you make a prediction based on your hypothesis, you test your hypothesis and that's what we tend to call the experiment. And that experiment is going to make you collect data observations from your results of your experiment. So what are you going to do with that data? You're going to and analyze the data? Okay. Now remember when you're analyzing your data you have to use critical thinking. It's kind of a given but part of the question. So let me add there that in order to analyze your data you need to use critical thinking. Okay. And after you analyze your data, see what you come up with. You're gonna end up making a conclusion based on your data. So based on your results on the facts you see there. Okay So we're still not well that's still not a theory. No this is all testing hypothesis. So what is a theory? Well a theory Okay starts out as a hypothesis but it's been tested lots of times. And not only has it been tested but it's been verified. You can use the words proven or supported means the same thing. It shows that your hypothesis was right and it's got to be multiple times several times once is not enough twice is not enough. Okay. In order for your theory for your hypothesis to be accepted and made into a theory. Okay. It's got to be tested and verified multiple times. Okay now the one thing is even though it's been accepted and tested and verified. Okay it is not absolute truth. This is a theory is a result of an experiment. It is not absolute truth. Okay. Um eventually accepted as absolute truth. No um absolute truth is what we would consider a law like the law of gravity and things like that. Not the theories. So of all the statements regarding theories, all of these are true except it is not considered absolute truth.


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