Question #3 / 10

A bag has2 blue marbles and12 green marbles. Half of the green marbles are made of plastic. A marble is selected at random from the bag. What is the probability that it is a green, plastic marble? Answer as a fraction in simplest form.

Question #4 / 10

A science class has3 girls and3 boys in the seventh grade and7 girls and5boys in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she selects are both boys? Answer as a fraction in simplest form.

Question #5 / 10

A radio disc jockey has8 songs on this upcoming hour's playlist:2are rock songs,4 are reggae songs, and2 are country songs. The disc jockey randomly chooses the first song to play, and then she randomly chooses the second song from the remaining ones. What is the probability that the first song is a country song and the second is a reggae song? Answer as a fraction in simplest form.

Question #8 / 10

The8 students in Mrs. Edwards' class were asked how many minutes it takes them to get to school in the morning. Here is what they answered:16,6,9,10,5,16,9,15

Find the mean and median travel times for these students.If necessary, round your answers to the nearest tenth

Question #10 / 10

The ages (in years) of the5 doctors at a local clinic are 41,35,35,40,49

Assuming that these ages constitute an entire population, find the standard deviation of the population. Round your answer to at least two decimal places.