The results of accounting principals' latest workonomix survey indicate the average american worker spends $1,092 on coffee annually (the consumerist, january 20, 2012). are there differences in coffee expenditures by age group? samples of ten consumers selected for three age groups (18-34, 35-44, and 45+), and the dollar amount each consumer spent last year on coffee is provided below. click on the webfile logo to reference the data. a. compute the mean, median, and standard deviation for the each of these three samples. round your answers to one decimal place. 18-34 35-44 45+ mean median standard deviation b. what observations can be made based on these data? the input in the box below will not be graded, but may be reviewed and considered by your instructor.