In this problem, we explore the effect on the standard deviation of multiplying each data value in a data set by the same constant. Consider the data set 4, 5, 7, 9, 5. A USE SALT (a) Use the defining formula, the computation formilla, or a calculator to compute s. (Round your answer to four decimal places.) S = X (b), Multiply .each data value by 7 to obtain the new data set 28, 35, 49, 63, 35. Compute s. (Round your answer to four decimal places.)