Question

(20.37) 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 28406 10578 8925 10047 10091 12883 6501 3995 15926 11070 8145 12646 21689 17805 7005 10969 37790 13181 4422 5255 What value we should remove from observation for applying t procedures? A 95% confidence interval (土10) for the mean number of words per day of men at this university is from | | to Is there evidence at the 5% level that the mean number of words per day of men at this university differs from 8000? words. No O Yes

Answer 1

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