At a call center in Los Angeles County, calls come in at an average rate of six calls per minute. Assume that the wait time from one call to the next follows the exponential distribution. Here we concern only with the rate of calling in and ignore the time spent on the phone. Also, we need to assume that the waiting time between calls is independent. That is, a long delay between two calls doesn't make a shorter waiting period for the next call. (1) Use rexp function in R to generate 1000 samples with the you derived from (d), and then draw a EDF plot with ecdf function. Finally, add confidence interval to your EDF plot. Thanks for your work in advance