A juice shop owner wants to know the average amount of juice his staff puts into each glass. A sample of 50 glasses was found to have an average (mean) of 245 ml. If the known standard deviation of the amount of juice in each glass is 4 ml for the entire population, what is the margin of error of the sample mean?

1.13 ml

1.24 ml

1.35 ml

1.49 ml

Question

A juice shop owner wants to know the average amount of juice his staff puts into each glass. A sample of 50 glasses was found to have an average (mean) of 245 ml. If the known standard deviation of the amount of juice in each glass is 4 ml for the entire population, what is the margin of error of the sample mean?


1.13 ml



1.24 ml



1.35 ml



1.49 ml

anonymous · Answer

can you please explain it? I've been stuck on this for a very long time.