We sample 20 new cars and find the average miles per gallon


We sample 20 new cars and find the average miles per gallon to be 26 with a standard deviation of 1.7.

Q: If we increase our sample size to 40, what is the standard error of the mean? 

**need equation and calculations**

 

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Applied Statistics: We sample 20 new cars and find the average miles per gallon
Reference No:- TGS01372785

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