A marketing study of 800 adults in the 18-34 age group reported the following information: * Spent less than $100 on children's clothing per year: 50 responses * Spent $100-5499 99 on children's clothing per year: 295 responses * Spent $500-5999.99 on children's clothing per year: 185 responses * Spent nothing: the remainder Develop a spreadsheet to estimate the sample mean and sample standard deviation of spending on children's clething for this age group using the following formulas, where k is the number of groups and M, is the midpoint of group i. Complete the table below. {Round to the nearest whole number as needed.) Money Spent Midpoint Frequency f;M; f; (Mi - x) 2 0 $ $ $ =100 g g 3 100-499.99 $ 3 g 500-999.99 $ 3 g