15. Chips. A computer chip manufacturer rejects 2% of the chips produced because they fail to work properly when tested. Suppose the company tests 10 chips. What’s the probability of these results? a) All 10 are okay. (None of the chips fails the test.) (ie. 0.001)

b) Exactly 1 of the 10 chips fails. (ie. 0.001)

c) Exactly 2 of the 10 chips fail. (ie. 0.001)

d) Exactly 3 of the 10 chips fail. (ie. 0.0001)

e) No more than 3 of the 10 chips fail the test. (ie. 0.0001)

Solve the problem by using a venn diagram a group of students were surveyed about their taste in music. they were asked how they like three types of music: rock, country western and jazz. the results are summarized below: no one dislikes all three types of music. six like all three types of music. eleven don’t like country western. sixteen like jazz. three like country western and jazz, but not rock. six don’t like rock. eight like rock and country western. seven don’t like jazz. how many students were surveyed?