18. We all believe that we see most of what goes on around us, at least...
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18. We all believe that we see most of what goes on around us, at least the most obvious things. Recently, however, psychologists have identi- fied a phenomenon called "selective looking" which means that, if our attention is drawn to one aspect of what we see, we can miss even seemingly obvious features presented at the same time. In a striking demonstration of this phenomenon, a series of randomly chosen stu- dents was shown a video of six people throwing a basketball around, and they were asked to count how many times the people in white shirts threw the ball (Simons and Chabris 1999). In the middle of this video, a woman dressed as a gorilla walked through the shot, pausing in the center to thump her chest, and then walked out of the shot. Look at the photo, and you will real- ize that nothing could be more obvious. Or was it? Of the 12 students watching the video, only five noticed the gorilla. a. What is the best estimate from these data of the proportion of students in the population who notice the woman in the gorilla suit? b. What is the 95% confidence interval for the proportion of students in the population who notice the woman in the gorilla suit? c. What is the best estimate from these data of the proportion of students who fail to notice the woman in the gorilla suit? 18. We all believe that we see most of what goes on around us, at least the most obvious things. Recently, however, psychologists have identi- fied a phenomenon called "selective looking" which means that, if our attention is drawn to one aspect of what we see, we can miss even seemingly obvious features presented at the same time. In a striking demonstration of this phenomenon, a series of randomly chosen stu- dents was shown a video of six people throwing a basketball around, and they were asked to count how many times the people in white shirts threw the ball (Simons and Chabris 1999). In the middle of this video, a woman dressed as a gorilla walked through the shot, pausing in the center to thump her chest, and then walked out of the shot. Look at the photo, and you will real- ize that nothing could be more obvious. Or was it? Of the 12 students watching the video, only five noticed the gorilla. a. What is the best estimate from these data of the proportion of students in the population who notice the woman in the gorilla suit? b. What is the 95% confidence interval for the proportion of students in the population who notice the woman in the gorilla suit? c. What is the best estimate from these data of the proportion of students who fail to notice the woman in the gorilla suit?
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Finite Mathematics and Its Applications
ISBN: 978-0134768632
12th edition
Authors: Larry J. Goldstein, David I. Schneider, Martha J. Siegel, Steven Hair
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