On Tuesday several patients visited Dr. McLeroy for their annual check-up. The scatter plot below shows the heights of his patients in relation to their ages. If the pattern continues what do you predict would be the height of a 13-year old patient?

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?