Refer to the accompanying data set and use the 30 screw lengths to construct a frequency distribution. Begin with a lower class limit of 1.220 in., and use a class width of 0.010 in. The screws were labeled as having a length of 1 1/4 in. Click on icon to view the data. Complete the frequency distribution below. Length (in.) Frequency 1.220 - (Type integers or decimals rounded to the nearest thousandth as needed.)The data represents the daily rainfall (in inches) for one month. Construct a frequency 0.45 0 0.26 0 0.52 distribution beginning with a lower class limit of 0.00 and use a class width of 0.20. Does the 0.19 0 0 1.22 0 frequency distribution appear to be roughly a normal distribution? 0.07 0 0.02 0.23 0.19 0.57 0.01 0 0.24 0 0.21 0 0.25 0 Daily Rainfall (in inches) Frequency 0.00-0.19 0.20-0.39 0.40-0.59 0.60-0.79 0.80-0.99 1.00-1.19 1.20-1.39Among latal plane crashes that occurred during the past 65 years, 115 were due to pilot error, 92 were due to other human error, 515 were due to weather, 81 were due to mechanical problems, and 596 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 Cause Frequency Pilot error :|% Other human eer :|% Weather :|% Mechanical problems :|% Sabotage :|% (Round to one decimal place as needed.)