1. (12 points) The histogram summarizing the length of customers' shopping trips (in minutes) to a grocery store is displayed below. Answer the following questions and explain your reason. Histogram of Shopping Trip Time (minutes) Frequency Shopping Trip Time (minutes] a) [3] Describe the distribution (shape, centre, and spread) of the corresponding data set. b) [4] What are the approximate values of the median, standard deviation, and lower quartile for the data set? (Hint: you can mention which level or bar includes the median and lower quartile) c) [2] Do you think the value of the mean is greater than the median? why?d) [3] What percentage of shopping trips in this study takes less than 55 minutes