among fatal plane crashes that occurred during the past 55 years, 637 were due to pilot error, 52 were due to other human error, 407 were due to weather, 240 were due to mechanical problems, and 51 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 42.9%
other human error 3.5%
weather 33.4%
mechanical problems 16.0%
sabotage 3.4%
(round to one decimal place as needed.)
what is the most serious threat to aviation safety, and can anything be done about it?
a. weather is the most serious threat to aviation safety. weather monitoring systems could be improved.
b. sabotage is the most serious threat to aviation safety. airport security could be increased.
c. pilot error is the most serious threat to aviation safety. pilots could be better trained.
d. mechanical problems are the most serious threat to aviation safety. new planes could be better engineered.

Question

among fatal plane crashes that occurred during the past 55 years, 637 were due to pilot error, 52 were due to other human error, 407 were due to weather, 240 were due to mechanical problems, and 51 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	42.9%
other human error	3.5%
weather	33.4%
mechanical problems	16.0%
sabotage	3.4%
(round to one decimal place as needed.)
what is the most serious threat to aviation safety, and can anything be done about it?
a. weather is the most serious threat to aviation safety. weather monitoring systems could be improved.
b. sabotage is the most serious threat to aviation safety. airport security could be increased.
c. pilot error is the most serious threat to aviation safety. pilots could be better trained.
d. mechanical problems are the most serious threat to aviation safety. new planes could be better engineered.

Accepted Answer

# Explanation:
## Step1: Calculate total number of crashes
$637 + 52+407 + 240+51=1387$
## Step2: Calculate relative frequency for pilot - error
Relative frequency of pilot error $=\frac{637}{1387}	imes100\%\approx46.0\%$
## Step3: Calculate relative frequency for other human - error
Relative frequency of other human error $=\frac{52}{1387}	imes100\%\approx3.8\%$
## Step4: Calculate relative frequency for weather
Relative frequency of weather $=\frac{407}{1387}	imes100\%\approx29.3\%$
## Step5: Calculate relative frequency for mechanical problems
Relative frequency of mechanical problems $=\frac{240}{1387}	imes100\%\approx17.3\%$
## Step6: Calculate relative frequency for sabotage
Relative frequency of sabotage $=\frac{51}{1387}	imes100\%\approx3.7\%$

The completed relative - frequency distribution:
| Cause | Relative Frequency |
| ---- | ---- |
| Pilot error | $46.0\%$ |
| Other human error | $3.8\%$ |
| Weather | $29.3\%$ |
| Mechanical problems | $17.3\%$ |
| Sabotage | $3.7\%$ |

Since the highest relative frequency is for pilot error, the most serious threat to aviation safety is pilot error. Pilots could be better trained to address this.

# Answer:
C. Pilot error is the most serious threat to aviation safety. Pilots could be better trained.

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QUESTION IMAGE

Question

Explanation:

Step1: Calculate total number of crashes

Step2: Calculate relative frequency for pilot - error

Step3: Calculate relative frequency for other human - error

Step4: Calculate relative frequency for weather

Step5: Calculate relative frequency for mechanical problems

Step6: Calculate relative frequency for sabotage

Answer:

Cause	Relative Frequency
Other human error	$3.8\%$
Weather	$29.3\%$
Mechanical problems	$17.3\%$
Sabotage	$3.7\%$