Among fatal plane crashes that occurred during the past 60 years, 395 were due to pilot error, b2 were human error, 262 were due to weather, 483 were due to mechanical problems, and 91 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. Relative Frequency % % to other Cause Pilot error Other human error Weather Mechanical problems Sabotage (Round to one decimal place as needed.) ***

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