Mathematics, 13.03.2020 05:01 leya509
A random sample of n = 755 US cell phone users age 18 and older in May 2011 found that the average number of text messages sent or received per day is 41.5 messages, with the margin of error about 12.2. The 95% confidence interval is
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A random sample of n = 755 US cell phone users age 18 and older in May 2011 found that the average n...
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