Question

In which example are the events dependent?


A)
Blake flips a coin 3 times. What is the probability that he flips heads all three times?


B)
Dreanna has a standard deck of 52 cards. She draws one card from the deck and then replaces it. She then draws a second card from the deck. What is the probability that both cards are Queens?


C)
In Mrs. Brown's Geometry class there are 15 boys and 10 girls. The students are presenting projects to the class. If Mrs. Brown selects students at random for presentations, what is the probability that the first 2 students chosen are gir

Answer 1

B because of the replacement

Answer 2

so its is not dependant if it is not replaced?

Answer 3

ooooooooooooh i read wrong sorry!!

Answer 4

B events are INDEPENDENT

Answer 5

okay, so which one is dependent?

Answer 6

actually i am not sure. you cannot flip heads three times in a row without flipping heads on the first and second time as well, but honestly this is one experiment, not two, so the question is not making any sense to me.
last one: if you pick one student, a girl, then the probability the second student is a girl changes, so i would say that is dependent as well, but again you are only given one experiment "pick two students" so i have to say i am confused by the question

Answer 7

yeah me too, well thank you for trying

Answer 8

good luck
frankly i think this problem is ill posed. to as if two events are independent you need two events.

Answer 9

*ask