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Math · Statistics And Probability
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1 During the BP Gulf oil crisis in the summer of 2010, a local television news program routinely asked viewers to call in with their opinion about proposed solutions to the problem. These results were likely biased because A. of a bad sampling frame. B. of an undefined target population. C. leading questions. D. of a voluntary response sample. E. of measurement error.

2)Some IQ tests are standardized to a Normal model with a mean of 100 and a standard deviation of 16. a) Draw the model for these IQ scores. Clearly label it, showing what the 68–95–99.7 Rule predicts about the scores. b) In what interval would you expect the central 95% of IQ scores to be found? c) About what percent of people should have IQ scores above 116? d) About what percent of people should have IQ scores be- tween 68 and 84? e) About what percent of people should have IQ scores above 132?

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