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Mathematics, 18.11.2020 20:30 dianamunoz580
Some years ago a survey concluded that 60% of Americans considered themselves more intelligent than average. A group of researchers decided to conduct another survey to see whether this figure had changed. Of the 1,500 people who were surveyed, 975 considered themselves smarter than average. At a 0.01 level of significance, does this result suggest that the original figure of 60% has changed?
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