Marie and amy are cutting ribbons to attach to balloons for amy’s birthday party. each guest’s chair will have one balloon tied to it. each ribbon is 2 3 of a yard, and they have 6 yards of ribbon in total. i need this done quick plss

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?