A survey of 8 adults employed full-time was taken. Here are their reported numbers of hours worked per week: 57, 60, 38, 57, 55, 44, 57, 52 Send data to calculator (a) What is the mean of this data set? If your answer is not an integer, round your answer to one decimal place. (b) What is the median of this data set? If your answer is not K an integer, round your answer to one decimal place. (c) How many modes does the data set have, and what are zero modes their values? Indicate the number of modes by clicking in the one mode: appropriate circle, and then indicate the value(s) of the mode(s), if applicable. two modes: and X