probability

1. A ball is drawn randomly from a jar that contains 5 red balls, 8 white balls, and 2 yellow balls. Find the probability of the given event. Write your answers as reduced fractions or whole numbers. (a) P(A red ball is drawn) = (b) P(The ball drawn is NOT red) = (c) P(A green ball is drawn) = 2. Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 9 2 17 28 Female 16 8 6 30 Total 25 10 23 58 If one student was chosen at random, determine the following probabilities. Write your answers as reduced fractions. P(Student was male) = P(Student was female) = P(Student was male and got an "A") = P(Student was female and got a "B") = P(Student got a "C") = 3. A company estimates that 0.7% of their products will fail after the original warranty period but within 2 years of the purchase, with a replacement cost of $50. If they offer a 2-year extended warranty for $4, what is the company's expected value of each warranty sold? $=