David’s percentage of free throws made in the first half is 50%, while Greg’s is 40%. During the second half, David makes 49% of his free throws and Greg makes 48%. A student who believes that David must have scored a better free throw percentage for the entire game may be falling victim to what error? Simpson’s Paradox Lurking Variables Confounding Variables Extreme Extrapolation
Approximately 8% of high school actors go on to perform in college. Of these college actors, only 1.9% go on to have a professional career. What is the probability that a high school actor will go on to play a professional career? 0.072% 0.152% 0.541% 1.10%
On the math portion of the SAT, the mean score was 510 with a standard deviation of 95. On the verbal portion, the mean score was 530 with a standard deviation of 85. We now know the mean of the combined score is 1040 with a standard deviation of 127.48. Given that these are normal distributions, we can do normal calculations with the combined statistics. What score would you need in order to be in the top five percent? 1131.8 1197.7 1231.5 1249.7
last questions ever
please help
@agent0smith
i think the first one is confounding variables?
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