The graphs below show the distributions for samples of delay times for three different BC ferry runs. a. 25% of the delay times for the Nanaimo run are greater than how many minutes? (1 mark) b. What is the interquartile range of the delay times for the Nanaimo run? (1 mark) c. Calculate the value of the upper fence for the Bowen Island run. (1 mark) d. Which distribution most closely follows a Normal model, and why? (1 mark) e. Briefly describe the key differences in the distribution of the delay times for the Nanaimo run compared to the Langdale run. (2 marks) OOO O Bowen Island Langdale Nanaimo 2.5 5 7.5 10 12.5 15 17.5 20 22.5 25 27.5 30 Delay Time (minutes)