Hypothesis Testing using only P
value format. Do not copy and paste all the results from the hypothesis test,
you are the expert, only include critical metrics from the test results.

Most air traffic passenger use
e-tickets. Electronic ticketing allows passengers not worry about paper tickets
and it reduces the airlines costs. However in recent times airlines have begun
to receive complaints from passengers regarding e-tickets, especially when
having to switch planes. To investigate this problem an independent watchdog
agency contacted a random sample of the last 21 months and collected data on
the number of complaints due to e-tickets.

At the .01 level of significance
is there evidence to conclude that the ten year average of 15 complaints per
month has now changed and actually increased due to electronic ticketing?