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

8.

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:

28402 10082 15940 21696 37787
10573 12880 11070 17795 13173
8913 6490 8155 7012 4431
10064 3988 12635 10977 5246

What value we should remove from observation for applying t procedures? ____

A 90% 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 10% level that the mean number of words per day of men at this university differs from 8000? Yes or No

Math   Statistics-And-Probability   
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