Most air travellers now use e-tickets. Electronic ticketing allows passengers to not worry about a paper ticket, and it costs the airline companies less to handle than paper ticketing. However, in recent times, the airlines have received complaints from passengers regarding their e-tickets, particularly when connecting flights and a change of airlines were involved. To investigate the problem, an independent agency contacted a random sample of 20 airports and collected information on the number of complaints the airport had with e-tickets for the month of March. The information is reported below:

1813111316161816171313151813171813171714

At the 0.01 significance level, can the agency conclude that the mean number of complaints per airport is less than 17 per month?

ONLY NEED c) ANSWERED --> Reject Ho if t< _______.

a.What assumption is necessary before conducting a test of hypothesis?

(Click to select)

The population of complaints follows a normal probability distribution.

The population of complaints not follows a normal probability distribution.

The population of complaints follows a uniform probability distribution.

b.Not available in Connect.

c.Conduct a test of hypothesis and interpret the results.

H₀:17;H₁: < 17;

Reject

H₀ift<_______.(Round the final answer to 3 decimal places.)