POWER REVIEW QUESTIONS_corrected

POWER REVIEW QUESTIONS_corrected - POWERREVIEWQUESTIONS

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POWER REVIEW QUESTIONS  1. The probability of correctly rejecting the null hypothesis is . ..  2. The probability of making the error of failing to reject the null hypothesis is . ..  3. What are five factors affecting the type II error rate?  4. Which factor affecting the power is the easiest to control?  5. Suppose you design an experiment to test a hypothesis against the null hypothesis, but  in reality, the null hypothesis is true. If the power is 3 times as large as the type II error  rate, what is the probability that your experiment will (properly) fail to reject the null  hypothesis?  6. If the TYPE II ERROR RATE of an experiment is equal to the power, (alpha=.05,2  tails) then what is the effect size in units of standard error?  7. The power of an experiment is .68. If everything in the experiment remained the same except the sample size was 4 times as  large and the standard deviation of the scores was 2 times as large, what would the  experiment's power be?  8. The power of an experiment is .73. If everything in the experiment remained the same, but the sample size was 4 times as  small and the standard deviation of the scores was 2 times as small, what would the 
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This note was uploaded on 09/28/2010 for the course PSYCH 100A 328-304-20 taught by Professor Shams during the Spring '10 term at UCLA.

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POWER REVIEW QUESTIONS_corrected - POWERREVIEWQUESTIONS

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