statistics
posted by Sharon .
At a certain college, 15% of the students received an A in their required math course, 10% receieved an A in their required chemistry course, and 5% received an A in both. A student is selected at random.
a.) What is the probability that he received an A in either chemistry or math?
b.) What is the probability that he received an A in chemistry, if he had an A in math?
c.) What is the probability that he received an A in math, if he had an A in chemistry?
d.) Are the events " A in math" and "A in chemistry" independent?
Respond to this Question
Similar Questions

statistics
At a certain college, 15% of the students received an A in their required math course, 10% received an A in their required Chemistry course, 5% received an A in both. A student is selected at random. a.) What is the probability tha … 
statistics
At a certain college, 15% of the students receieved an A in their required math cousre, 10% receieved an A in their required chemistry course, and 5% receieved an A in both. A student is selected at random. a.) What is the probability … 
english
how about this for starters? The shift from being a high school student to a college student can be both pleasurable and discomforting at the same time for the simple fact that college is nothing like high school. In college there 
basic statistics for the behavioral sciences
there are 80 students enrolled in statistics. (a)you and 11 other earned the same score. what percent of the class received your score? 
STATISTICS
Suppose that, for students who are enrolled in college algebra, 78 percent are freshmen, 40 percent are female, and 28 percent are female and are freshmen. Your answers below should be entered as decimals and rounded to three decimal … 
statistics
Last semester, a certain professor gave 23 As out of 279 grades. If one of the professor's students from last semester were selected randomly, what is the probability that student received an A? 
MATH 104
Last semester, a certain professor gave 24 As out of 244 grades. If one of the professor's students from last semester were selected randomly, what is the probability that student received an A? 
Finite Math
Fifty percent of students enrolled in calculus class have previously taken precalculus. Thirty percent of these students received an A for the calculus class, whereas twenty percent of the other students received an A for calculus. … 
statistics (math)
of college students 45% are women 8% have a GED. suppose a student is selected at random. Given that the selected employees is a woman. what is the probability that she has a GED 
probality
Blue Nile University recently conducted a survey of undergraduate students in order to gather information about the usage of the library. The population for this study included all 4000 undergraduate students enrolled in the university. …