See below a histogram of the ages of n=279 patients being treated for back pain. Estimate the mean and standard deviation of the ages of back pain patients. Assume the graph is close enough to bell-shaped to use the 95% rule

Ian is in training for a national hot dog eating contest on the 4th of july. on his first day of training, he eats 4 hot dogs. each day, he plans to eat 110% of the number of hot dogs he ate the previous day. write an explicit formula that could be used to find the number of hot dogs ian will eat on any particular day.