An airline claims that 65% of its flights depart on time. A sample of 100 flights was

Question:

An airline claims that 65% of its flights depart on time. A sample of 100 flights was examined and it was determined that 63% left on time. If the goal is to test whether less than 65% of the flights depart on time, what is the value of the calculated test statistic at the 5% level of significance?