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?

Arunner is jogging at a steady 3.6 km/hr. when the runner is 2.9 km from the finish line, a bird begins flying from the runner to the finish line at 14.4 km/hr (4 times as fast as the runner). when the bird reaches the finish line, it turns around and flies back to the runner. even though the bird is a dodo, we will assume that it occupies only one point in space, i.e., a zero-length bird. how far does the bird travel? (b) after this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. the bird repeats the back and forth trips until the runner reaches the finish line. how far does the bird travel from the beginning? (i.e. include the distance traveled to the first encounter)