Arestaurant owner recorded the amount of money spent per person for the 30 most recent customers. the owner calculated the measures of central tendency shown below. mean is $16.11 median is $19.72 should the owner use the mean or median to predict what the next 30 customers will spend at the restaurant? based on the data what is the total amount of money the restaurant owner should expect the next 30 customers to spend at the restaurant?