Question

Among fatal plane crashes that occurred during the past 50 years, 379 were due to pilot air 74 to the other human air 68 were due to weather 283 were due to mechanical problems, and 527 were due to sabotage

Answer 1

We have

Total number of plane crashes = 379 + 74 + 68 + 283 + 527 = 1331

Then, relative frequency distribution:

pilot error =

`(379)/(1331)\cdot100=28.5`

other human error =

`(74)/(1331)\cdot100=5.5`

weather =

`(68)/(1331)\cdot100=5.1`

mechanical problems =

`(283)/(1331)\cdot100=21.3`

sabotage =

`(527)/(1331)\cdot100=39.6`

Answer:

pilot error 28.5%

human error 5.5%

weather 5.1%

mechanical problems 21.3%

sabotage 39.6%