Sarah is going on a trip. She drives for 2 hours and 45 minutes, rests for 35 minutes and drives for another 2 hours 50 minutes.
What is her total travel time in hours and minutes

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3