True mean percentage of ethanol in dwi arrestees


Jane Researcher is studying the percentage of ethanol in DWI arrestees' blood. She tests 16 subjects and finds a mean of 1.8% with a standard deviation of .2%.

a.) Calculate the z score for a subject with an ethanol percentage of 2.0%

b.) What is the (estimated) standard error of the mean?

c.) Produce a 95% confidence interval for the true mean percentage of ethanol in DWI arrestees.

Request for Solution File

Ask an Expert for Answer!!
Basic Statistics: True mean percentage of ethanol in dwi arrestees
Reference No:- TGS0736939

Expected delivery within 24 Hours