Question

Researchers report that the average teen ( age 13-17) sends 1742 +- 112 text messages per month. which of the following is the best interpretation of this information

A- no teen sent fewer than 1630 txts or more than 1854 txts in a single month
B- 1742 is an estimate of the average txts sent by teens in one month
C- the margin of erroe is +-224 txt messages
D- the margin of error is +-2 years of age

Answer 1

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Answer 2

B. I would probably say b. It can't be a because we are not given all the information about all the teenagers. It says "NO teen" we are not given the minimum and maximum
It can't be c because the margin of error is plus/minus 112.
It's not d because we are not calculating anything for age so there can be no margin of error for age.