Which of the following in an example of a dependent event?
1)Teresa has a full deck of 52 cards. She chooses a jack at random and then puts it back into the deck. Next, she chooses a 10.
2)Johnny spins the number 3 on a spinner with numbers 1 through 8 on it. He then tosses a coin and ends up with heads.
3)Mike has five cards, numbered 1 through 5. He picks the card numbered 3. Then, without replacing the first card, he picks the card numbered 1.
4)Mindy's sock drawer currently has 3 pairs of white socks, 2 pairs of polka-dotted socks, and 4 pairs on black socks in it. Without looking, s

Question

Which of the following in an example of a dependent event?
1)Teresa has a full deck of 52 cards. She chooses a jack at random and then puts it back into the deck. Next, she chooses a 10. 
2)Johnny spins the number 3 on a spinner with numbers 1 through 8 on it. He then tosses a coin and ends up with heads.
3)Mike has five cards, numbered 1 through 5. He picks the card numbered 3. Then, without replacing the first card, he picks the card numbered 1. 
4)Mindy's sock drawer currently has 3 pairs of white socks, 2 pairs of polka-dotted socks, and 4 pairs on black socks in it. Without looking, s

btaylor · Answer

#3, because there is no replacement.

anonymous · Answer

Yup. If there's replacement, the probability wouldn't change. Without replacement, the second draw depends on that no replacement to change probability.