Their executive feels that the overall trend looks good. especially given the six quarters of zero. But she is concerned by the excessive number of quarters with three events, especially since the last two occurred after a quarter of zero. She insisted on going back to do all the root cause analyses for the past two years. The board is really applying pressure by insisting on no more than one incident per quarter and a special report to them with a proposed action plan if two or more occur. Prepare a 4-5 page paper to answer the following questions and analyze the additional data and charts. Is there statistical evidence that the root cause analyses have helped? Is the trend line in the above bar graph insightful? From this data. construct a run chart