EDCO 735 quiz 3.2

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Liberty University *

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EDCO 735

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Statistics

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Feb 20, 2024

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Question 1 3 / 3 pts What information does a null hypothesis test provide? Correct! the probability of having a sample mean that is farther away from the population mean than the nominal alpha level only due to sampling error Question 2 3 / 3 pts In reality if the null hypothesis should be rejected and researchers reject it, they have committed: no error Question 3 3 / 3 pts If nominal alpha is set to .01, which of these p values would be considered criteria for rejecting the null hypothesis? Correct! .009 Question 4 3 / 3 pts If the nominal alpha is set to .05, what p value would be considered statistically significant? Correct! .022 Question 5 3 / 3 pts What can we know from our results of a study that we have rejected the null hypothesis? Correct! the sample means were statistically different from one another

Question 6 3 / 3 pts Which statement is most accurate? a study may have statistically significant results without the existence of a true effect in the population You Question 7 3 / 3 pts If the state of the world is that the null hypothesis should not be rejected and researchers fail to reject it, they have committed: Correct! no error Question 8 3 / 3 pts What is statistical power? Correct! the probability of rejecting the null hypothesis when it should be rejected Question 9 3 / 3 pts What can reduce the risk of committing a Type I Error? Correct! lowering the nominal Alpha level

Question 10 3 / 3 pts When we reject the null hypothesis we: Correct! claim there is a difference

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