1)a bag contains five red marbles and seven blue marbles. you pull one marble out of the bag and replace it before putting out a second marble. what kind of event is this? independent, dependent, or both?
2) A bag contains 5 marbles. Without looking, you pick a marble with your right hand and then pick a marble with your left hand. What kind of event is this? Independent, dependent or both?
3) The gum ball machine contains 10 red gum balls, 5 blue gum balls, 6 yellow gum balls and 4 green gum balls. You have enough money to buy to gum balls. What is the probability that the fist gum ball will be a yellow gumballnand the second will be blue?
4) You spin the spinner, what is the probability of landing on an odd number? Write your answer as a ratio and as a percent. The spinner goes from 0-9
5) What is the probability of rolling a number less than 4 on a numbered cube and landing on tails when tossing a coin?
1) I put independent
2) I put dependent
3) I put 6/25 * 5/25= 6/125
4) I put ratio 5 and percent 50%
5) I put 4/6 * 1/2 = 4/12 = 1/3
9 answers
2. either both or dependent...not sure.
3. I think this should be 6/25 and 5/24.
4. there are 10 numbers, with 5 being odd. What is the answer?
#2 dependent
#3 6/25 * 5/24
#4 1/2 or 1:2 and 50%
#5 3/6 * 1/2
5 answers