Test the given problem using independent sample z -test
A candy company wants to identify whether or not the size of it's' candy bars are the same length from one day to another. On day 1 they sample 52 candy bars with an average mean of 5.40 inches and on day 2 they sample 52 bars again with an average mean of 5.6 inches. Both days have sample standard deviations of 3.4. Is an average mean of size different from day 1 to day 2?