University of California Irvine Statistics & Probability Questions

5. In the box of chocolates example in which you eat the first chocolate you pick, the successive chocolate picks are

Group of answer choices

randomized.

independent.

related.

dependent.

unrelated

6. In the pool example, we concluded that events DF and IC are dependent events because

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IC causes pool filters to get dirty faster.

we found that P(IC | DF) was different from P(IC).

a pool can have both IC and DF.

a pool can have DF and not have IC.

8.The confusion of the inverse is:

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confusing P(A) with P(not A)

confusing P(A | B) with P(B | A)

confusing P(A or B) with P(A and B)

confusing P(A) with P(B | A)

9.If “6ft+” stands for a human height of at least 6 feet, then P(6ft+ | man) is the probability

Group of answer choices

of being a man but not one who is 6ft+ tall.

of being a man if the person is 6ft+ tall.

of being 6ft+ tall but not a man.

of being neither a man nor 6ft+ tall.

of being a man and being 6ft+ tall.

of being 6ft+ tall if the person is a man.

10. If “6ft+” stands for a human height of at least 6 feet, then we can see from the distribution of adult heights shown in the videos that

Group of answer choices

P(man | 6ft+) = 1 – P(6ft+ | man)

P(man | 6ft+) < P(6ft+ | man)

P(man | 6ft+) > P(6ft+ | man)

P(man | 6ft+) = P(6ft+ | man)