Records of 200 flights for a major airline company showed th

Records of 200 flights for a major airline company showed that 130 planes were on time; 32 were delayed because of weather, 13 because of NAS delay, and the rest because of arriving late. At a = 0.05, do these results differ from the government statistics on the following chart? Use a graphing calculator

Actions                                                      % of time

On time                                                       70.8           

NAS delay                                                    8.2

Aircraft arriving late                                     9.0

Other                                                            12.0

Solution

The test hypothesis:

Null hypothesis: these results do not differ from the government statistics on the following chart

Alternative hypothesis: these results differ from the government statistics on the following chart