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categoryإحصاء schoolبكالوريوس event_available2026-07-13

السؤال

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1. Jamie believes that people who watch the news each night do better on a history test (out of 15 points) than people who do not. To test this theory, Jamie asks 7 people to watch the news for an hour each night before bed for one month, and then administers a history test to these participants (in 2012) The following year, Jamie asks these same 7 people to avoid watching the news for one month, and the administers the history test one more time (in 2013). The data follows. Is Jamie right? (13 points) 2012 9 10 12 8 9 6 10 Watched News 2013 4 5 10 7 6 6 9 Did NOT Watch New

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