The weekly price fluctuation of WMB stock has a mean of $3.01 and a standard deviation of $0.31. A sample of 149 weekly price fluctuations for this stock have been measured and the mean has been calculated. Calculate the standard error of the mean (σX). Give your answer to 3 decimal places.

Abakery recorded the number of muffins and bagels it sold for a seven day period. for the data presented, what does the value of 51 summarize? a) mean of bagels b) mean of muffins c) range of bagels d) range of muffins sample # 1 2 3 4 5 6 7 muffins 61 20 32 58 62 61 56 bagels 34 45 43 42 46 72 75