Red widget strategies wants to improve its customer service by being more efficient in how phone calls are processed. toward that end, red widget does a statistical analysis of 1,000 outbound phone calls. the length of the calls is normally distributed, with a population mean = 240 seconds, and a population standard deviation = 40 seconds. a. what is the probability that a particular call lasted less than 180 seconds? b. what is the probability that a particular call lasted between 180 and 300 seconds? c. what is the probability that a call lasted between 110 and 180 seconds?