among total plane - crashes that occurred during the past 65 years, 424 were due to pilot error, 66 were due…

among total plane - crashes that occurred during the past 65 years, 424 were due to pilot error, 66 were due to other human error, 51 were due to weather, 270 were due to mechanical problems and 463 were due to sabotage.\nconstruct the relative - frequency distribution. what is the most serious threat to aviation safety, and can anything be done about it?\ncomplete the relative - frequency distribution below.\ncause\trelative frequency\npilot error\t%\nother human error\t%\nweather\t%\nmechanical problems\t%\nsabotage\t%\n(round to one decimal place as needed.)\nwhat is the most serious threat to aviation safety, and can anything be done about it?\na. pilot error is the most serious threat to aviation safety. pilots could be better trained.\nb. sabotage is the most serious threat to aviation safety. airport security could be increased.\nc. mechanical problems are the most serious threat to aviation safety. new planes could be better engineered.\nd. weather is the most serious threat to aviation safety. weather monitoring systems could be improved.

among total plane - crashes that occurred during the past 65 years, 424 were due to pilot error, 66 were due to other human error, 51 were due to weather, 270 were due to mechanical problems and 463 were due to sabotage.\nconstruct the relative - frequency distribution. what is the most serious threat to aviation safety, and can anything be done about it?\ncomplete the relative - frequency distribution below.\ncause\trelative frequency\npilot error\t%\nother human error\t%\nweather\t%\nmechanical problems\t%\nsabotage\t%\n(round to one decimal place as needed.)\nwhat is the most serious threat to aviation safety, and can anything be done about it?\na. pilot error is the most serious threat to aviation safety. pilots could be better trained.\nb. sabotage is the most serious threat to aviation safety. airport security could be increased.\nc. mechanical problems are the most serious threat to aviation safety. new planes could be better engineered.\nd. weather is the most serious threat to aviation safety. weather monitoring systems could be improved.

Answer

Explanation:

Step1: Calculate total number of crashes

$424 + 66+51 + 270+468=1279$

Step2: Calculate relative frequency for pilot error

Relative frequency = $\frac{424}{1279}\times100%\approx 33.2%$

Step3: Calculate relative frequency for other human - error

Relative frequency = $\frac{66}{1279}\times100%\approx 5.2%$

Step4: Calculate relative frequency for weather

Relative frequency = $\frac{51}{1279}\times100%\approx 4.0%$

Step5: Calculate relative frequency for mechanical problems

Relative frequency = $\frac{270}{1279}\times100%\approx 21.1%$

Step6: Calculate relative frequency for sabotage

Relative frequency = $\frac{468}{1279}\times100%\approx 36.6%$

Step7: Determine the most serious threat

Since $36.6%$ (sabotage) is the highest relative - frequency, sabotage is the most serious threat.

Answer:

Cause Relative Frequency
Pilot error $33.2%$
Other human error $5.2%$
Weather $4.0%$
Mechanical problems $21.1%$
Sabotage $36.6%$
A. Sabotage is the most serious threat to aviation safety. Airport security could be increased. So the answer for the multiple - choice part is B.