with explanation and show you work A sample of 100 balls has an average weight of 50 g and a standard deviation of 5 g. A second sample of 100 balls has an average weight of 100g and a standard deviation of 5 g. If the two samples are combined, the standard deviation of all 200 balls will be ____. (Hint: try to solve this problem by roughly estimating with diagrams.) A. less than 5 g B. greater than 5 g C. equal to 5 g D. can't tell from the information given