It has been reported that the average adult sends and receives 658 text messages per week....
It has been reported that the average adult sends and receives 658 text messages per week. Imagine that we take a random sample of size n = 250 adults from this population and find that the sample standard deviation is 128.5. We know the sampling distribution of the sample mean in this case would have a standard deviation equal to approximately
A 15.81.
B 128.5.
C 1.51.
D 8.13.
E 658.
Homework Answers
standard deviation is
= 
= 8.127
=8.13
Option D is correct choice.
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It has been reported that the average adult sends and receives
658 text messages per week....
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