Physics
Physics, 30.11.2019 04:31, shakira11harvey6

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?

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