posted by Sarah .
Build a 95% confidence interval for the mean of the population from the given sample data. Assume that the population has a normal distribution.
16.4, 15.7, 16.2, 15.8 17.1
15.8, 15.9, 16.0, 16.4 15.0
*please help me solve this! I have no clue what I am supposed to do
mean -+ sdv * z/a/2 / sqrt(n))