Suppose a scheduled airline flight must average at least 64% occupancy in order to be profitable to the airline. Occupancy rates were recorded daily for a regularly scheduled flight on each of 120 days, showing a mean occupancy per flight of 62% and a standard deviation of 9%. (c)
Do the occupancy data for the 120 flights suggest that this scheduled flight is unprofitable? Test using = 0.05. (Round your answers to two decimal places. If the test is one-tailed, enter NONE for the unused region.)
test statistic
z =
rejection region
z >
z