A psychologist is interested in testing whether offering students a financial incentive improves their video-game-playing skills. She

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A psychologist is interested in testing whether offering students a financial incentive improves their video-game-playing skills. She collects data and performs a hypothesis test to test whether the probability of getting to the highest level of a video game is greater with a financial incentive than without. Her null hypothesis is that the probability of getting to this level is the same with or without a financial incentive. The alternative is that this probability is greater. She gets a p-value from her hypothesis test of 0.003. Which of the following is the best interpretation of the p-value?

i. The p-value is the probability that financial incentives are not effective in this context.

ii. The p-value is the probability of getting exactly the result obtained, assuming that financial incentives are not effective in this context.

iii. The p-value is the probability of getting a result as extreme as or more extreme than the one obtained, assuming that financial incentives are not effective in this context.

iv. The p-value is the probability of getting exactly the result obtained, assuming that financial incentives are effective in this context.

v. The p-value is the probability of getting a result as extreme as or more extreme than the one obtained, assuming that financial incentives are effective in this context.

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Introductory Statistics Exploring The World Through Data

ISBN: 9780135163146

3rd Edition

Authors: Robert Gould, Rebecca Wong, Colleen N. Ryan

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