In New York City the number of taxis allowed to operate is limited by the municipal government. The number of taxis has remained constant for a number of years. That number is 13,587. Taxi records reveal that the average number of trips per day in 2010 was 27.15. The advent of Uber and Lyft has resulted in a decline in the demand for taxis. A survey of taxi drivers asked each to report the number of trips on an average day. Is there enough evidence to infer that there has been a decrease in the number of trips per day among New York City taxis?