Out of all the trains currently at Middlebury Station, 5 are headed east, 4 are headed west, and 9 are headed north.
What is the probability that a randomly selected train will be
heading north?

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?

For the feasibility region shown below find the maximum value of the function p=3x+2y

Acircle has a radius of 17. approximately what is the area of the circle