Arecipe for a loaf of bread calls for 2/3 of a cup of flour if milo used 12 cups of flour how many loafs of bread did he prepare

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?