An agency has conducted a survey of cable TV providers in a certain region of a state. Here arethe number of channels they offer in basic service: `32, 28, 31, 15, 23, 14, 12, 29, 22, 28, 29, 32,33, 24, 26, 8, 35`. (a) Calculate the median number of channels provided. (b) Calculate the mean number ofchannels provided. (c) which value is a better measure of central tendency of these data?