Question

The quality of department of a company tested a bottle of fillers and found them to fill 500 ml bottles to mean of 50.1 ml, with a standard deviation of 0.48 ml. the company’s standard is set at test of results being within two standard deviations of the mean. What is the acceptable range of fill ? if three bottles were tested for fill volume . which are acceptable 501.0 ml, 502.1 ml ,500 ml.

Answer 1

check your typing, 500 ml with a mean of 50.1 ml ??

method
upper = mean + 2(.48) = ..
lower = mean - 2(.48) = ...