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How do you decide whether to use a z test or a t test when testing a hypothesis about a population mean?
Wiki User
∙ 13y ago
You use a z test when you are testing a hypothesis that is using proportions
You use a t test when you are testing a hypothesis that is using means
Wiki User
∙ 13y ago
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What does it mean to draw a conclusion?
Scientists decide whether their data supports or refutes their hypothesis or prediction; they look for possible errors...
What is the p-value if 0.01 is the level of significance and the mean is 18688 and the standard deviation is 15500?
In order to solve this you need the null hypothesis value also level of significance only helps you decide whether or not to reject the null hypothesis, is the p-value is above this then you do not reject the null hypothesis, if it is below you reject the null hypothesis Level of significance has nothing to do with the math
Need a hypothesis for how does your power in climbing a flight of stairs compare with the power of a 100 W light bulb?
A hypothesis could be that your power is the same. Or it could be that your power is a million times greater or only one millionth. You decide!A hypothesis could be that your power is the same. Or it could be that your power is a million times greater or only one millionth. You decide!A hypothesis could be that your power is the same. Or it could be that your power is a million times greater or only one millionth. You decide!A hypothesis could be that your power is the same. Or it could be that your power is a million times greater or only one millionth. You decide!
How would you determine the expected frequencies for a chi-square goodness of fit test?
You first decide on a null hypothesis. Expected frequencies are calculated on the basis of the null hypothesis, that is, assuming that the null hypothesis is true.
How do you create a problem that uses probability?
To decide whether or not to take an umbrella as you go out, you need to know the probability that it will rain.To decide whether or not to take an umbrella as you go out, you need to know the probability that it will rain.To decide whether or not to take an umbrella as you go out, you need to know the probability that it will rain.To decide whether or not to take an umbrella as you go out, you need to know the probability that it will rain.
How do scientists decide whether or not to reject or accept a hypothesis?
if the hypothesis is proven to be correct or incorrect
What are you doing when you decide whether or not the data support the original hypothesis?
Drawing Conclusions
What are you doing When you decide whether or not the data supports the original hypothesis?
Drawing Conclusions
What does the researcher hope to do with null hypothesis (the opposite ofthe research hypothesis)?
In fact, any statistical relationship in a sample can be interpreted in two ways: ... The purpose of null hypothesis testing is simply to help researchers decide ... the null hypothesis in favour of the alternative hypothesis—concluding that there is a ...
Is a hypothesis is a decision based on the results of the experiment.?
No. An hypothesis is an idea put forward to explain an observation. Often you do the experiment to test the hypothesis. The results of the experiment may help you decide whether to discard your hypothesis or to test it further.
What does it mean to draw a conclusion?
Scientists decide whether their data supports or refutes their hypothesis or prediction; they look for possible errors...
What is a hyothcsis?
A hypothesis is an educated guess. In science, when you are given a question or if you want to examine something, you first have to question being asked, which is important to define. Then you need to decide what you think the answer is. This is your HYPOTHESIS. After you have it, you design an experiment to test it. Based on that experiment, decide whether or not your hypothesis is supported by your results. Then you can either adjust your hypothesis or figure out new ways to test it. Science marches on!
Parts of the population of will vote in 2010 to decide whether they will form their own country?
Sudan.
Which of the following are examples of inferential statistics?
Testing random samples of wild animals to decide whether they are healthy Testing 1 in 10 of a company's products to determine that they are defect-free
Why is penetration testing important?
Penetration testing helps investors decide whether or not a particular product will sell, and the probably percentage of sales that will be made within a certain group of consumers.
What is the p-value if 0.01 is the level of significance and the mean is 18688 and the standard deviation is 15500?
In order to solve this you need the null hypothesis value also level of significance only helps you decide whether or not to reject the null hypothesis, is the p-value is above this then you do not reject the null hypothesis, if it is below you reject the null hypothesis Level of significance has nothing to do with the math
What is the differnece between experimental hypothesis and directional hypothesis?
The experimental hypothesis, if stipulated like this, does not imply to be taking any specific direction in its prediction. Hence we will be in a situation were it will only refer to as either, a difference or a correlation only, the experiemntal hypothesis. However, if we decide to give direction to the experimental hypothesis, then we will have to add some information to the stipulation focusing on whether we predict that the difference involved will specifically cause an increase or decrease of the dependent variable(s), the directional hypothesis.
