Each year, taxpayers are able to contribute money to various charities via their IRS tax forms. The following list contains the amounts of money (in dollars) donated via IRS tax forms by 8 taxpayers. 69, 40, 99, 99, 40, 40, 91, 99 Send data to calculator (a) What is the mean of this data set? If your answer is not an O integer, round your answer to one decimal place. (b) What is the median of this data set? If your answer is not 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: 0 appropriate circle, and then indicate the value(s) of the mode(s), if applicable. two modes: and X