Question

among fatal plane crashes that occurred during the past 50 years, 650 were due to pilot error, 81 were due to other human error, 77 were due to weather, 641 were due to mechanical problems, and 205 were due to sabotage. construct the relative frequency distribution. what is the most serious threat to aviation safety, and can anything be done about it? complete the relative frequency distribution below. cause relative frequency pilot error % other human error % weather % mechanical problems % sabotage % (round to one decimal place as needed.) what is the most serious threat to aviation safety, and can anything be done about it? a. sabotage is the most serious threat to aviation safety. airport security could be increased. b. weather is the most serious threat to aviation safety. weather monitoring systems could be improved. c. mechanical problems are the most serious threat to aviation safety. new planes could be better engineered. d. pilot error is the most serious threat to aviation safety. pilots could be better trained.

Explanation:

Step1: Calculate total number of crashes

$650 + 81+77 + 641+205=1654$

Step2: Calculate relative frequency for pilot error

$\frac{650}{1654}\times100\%\approx39.3\%$

Step3: Calculate relative frequency for other human error

$\frac{81}{1654}\times100\%\approx4.9\%$

Step4: Calculate relative frequency for weather

$\frac{77}{1654}\times100\%\approx4.6\%$

Step5: Calculate relative frequency for mechanical problems

$\frac{641}{1654}\times100\%\approx38.7\%$

Step6: Calculate relative frequency for sabotage

$\frac{205}{1654}\times100\%\approx12.4\%$

Step7: Determine most serious threat

Since $39.3\%$ (pilot error) is the highest relative - frequency, pilot error is the most serious threat.

Answer:

Pilot error: 39.3%
Other human error: 4.9%
Weather: 4.6%
Mechanical problems: 38.7%
Sabotage: 12.4%
D. Pilot error is the most serious threat to aviation safety. Pilots could be better trained.