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Researchers claim that women speak significantly more words per day than men. One estimate is that...

Researchers claim that women speak significantly more words per day than men. One estimate is that a woman uses about 20,000 words per day while a man uses about 7,000. To investigate such claims, one study used a special device to record the conversations of male and female university students over a four- day period. From these recordings, the daily word count of the 20 men in the study was determined. Here are their daily word counts: 28398 10085 15927 21684 37793 10583 12872 11067 17795 13191 8914 6497 8161 7021 4432 10059 3997 12632 10965 5264 What value we should remove from observation for applying t procedures? A 95% confidence interval (±10) for the mean number of words per day of men at this university is from to words. Is there evidence at the 5% level that the mean number of words per day of men at this university differs from 9000? 28398 10085 15927 21684 37793 10583 12872 11067 17795 13191 8914 6497 8161 7021 4432 10059 3997 12632 10965 5264

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