Choose Yes or No to tell if the fraction 5 8 5 8 will make each equation true. 8 15 − □ 8 15 - □ = = 3 7 3 7 □ □ − - 5 16 5 16 = 5 8 = 5 8 7 8 − 1 2 = 7 8 - 1 2 = □ □ 3 4 − 1 8 = 3 4 - 1 8 = □ □ yes or no questions are they equal?

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?