[40 points]
Suppose you collected data on the average number
of text messages sent per month by 300...

Question

[40 points]
Suppose you collected data on the average number
of text messages sent per month by 300 randomly selected teenagers over 2009
and 2010 and found the sample meanwas 3,339
text messages with an estimated standard error of. Assume
that the population data are normally distributed

David · Accepted Answer

Q 1) 
Solution. If we use maximum likelihood estimate then 
Mean=sample mean=3339 
Variance =SE^2=250*250=62500 
Unbiased variance estimate=62500*300/299=62709.03

[40 points] Suppose you collected data on the average number of text messages sent per month by 300 randomly selected teenagers over 2009 and 2010 and found the sample meanwas 3,339 text messages with...

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