Ronin Mullins

Mathematics

10 December, 06:55

Julie has two formal events to go to. She has six formal dresses--two blue ones, one black, one red, and two white.

Given she will not wear the same dress to both events she calculates the probability of her wearing blue to both events as

p (blue and blue) =

2

6

·

2

6

.

Is she correct?

A) yes, the two events are independent.

B) no, the two events are independent.

C) no, the probability of the second dress being blue changes after she chooses the first dress.

D) yes, the probability of the second dress being blue is not dependent on the first dress being blue.