Among fatal plane crashes that occurred during the past 70 years, 698 were due to pilot error, 93 were due to other human error, 97 were due to weather, 407 were due to mechanical problems, and 685 were due to sabotage. O 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. Relative Cause Frequency Pilot error % Other human error % Weather % Mechanical problems Sabotage (Round to one decimal place as needed.)

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