Paragraph Styles Edit A pharmaceutical company is having problems with the electrical system and this situation is affecting the production process. The duration of power failures, in minutes, is shown in the below. Duration of power failures in minutes 22 18 66 15 83 55 28 121 70 66 74 89 40 98 87 132 50 96 118 66 a) Compute the sample mean, mode, and median of the electrical failure durations. b) Calculate the 30% trimmed mean of the electrical failure durations. c) Calculate the standard deviation of the electrical failure durations. d) Calculate the quartiles of the durations of the electrical failure