here are 500 seniors at a certain high school, of which 230 are males. It is known that 30% of the males wear contact lenses and 40% of the females wear contact lenses. If a student is selected at random from the senior class, what is the probability that the student is: a) a female who wears contact lenses? b) a male who doesn’t wear contact lenses?

A survey of athletes at a high school is conducted, and the following facts are discovered: 40% of the athletes are football players, 37% are basketball players, and 8% of the athletes play both football and basketball. An athlete is chosen at random from the high school: what is the probability that the athlete is either a football player or a basketball player? % (Please enter your answer as a percent)

A survey of athletes at a high school is conducted, and the following facts are discovered: 9% of the athletes are football players, 83% are basketball players, and 1% of the athletes play both football and basketball. An athlete is chosen at random from the high school: what is the probability that the athlete is either a football player or a basketball player?

A random student will be selected from the College of Engineering. The number of male (B) and female (G) students in each department are as follows: For Civil Engineering (C) it is 43 and 15 respectively; for Electronics and Electrical engineering (E), it is 32 and 19 respectively; and for Mechanical Engineering (M), its 23 and 8 respectively. A. What is the probability that the student is male ME student or an EE student? B. What is the probability that the student is female given that she is not an ME student? C. What is the probability that the student is either a female or a CE student? D. What is the probability that the student is a male given that he is a CE student?