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
You don't know anything?
Can u at least tell me if I was right about numbers 1&2?
And 4?
1. independent
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?
Please????
4. is right.
#1 independent
#2 dependent
#3 6/25 * 5/24
#4 1/2 or 1:2 and 50%
#5 3/6 * 1/2
Number 4 would be 50%
Yes.
1) The first question involves pulling marbles out of a bag with replacement. Since the marbles are replaced before the second marble is chosen, each pull is not affected by the previous pull. Therefore, this is an independent event.
2) The second question involves picking marbles from a bag without replacement. Once one marble is picked, the number of remaining marbles changes, affecting the probability of the second pick. Therefore, this is a dependent event.
3) To find the probability of the first gum ball being yellow and the second gum ball being blue, you multiply the probability of each event. The probability of the first gum ball being yellow is 6 yellow gum balls out of 25 total gum balls. The probability of the second gum ball being blue is 5 blue gum balls out of 25 total gum balls. Multiplying these probabilities gives you (6/25) * (5/25) = 6/125.
4) To find the probability of landing on an odd number when spinning a spinner with numbers from 0 to 9, you need to determine how many odd numbers are on the spinner. In this case, there are 5 odd numbers (1, 3, 5, 7, 9). The total number of outcomes is 10, since there are 10 numbers on the spinner. Therefore, the probability is 5/10, which can be simplified to 1/2. In percentage form, this is 50%.
5) To find the probability of rolling a number less than 4 on a numbered cube and landing on tails when tossing a coin, you need to determine the number of favorable outcomes and the total number of outcomes. There are 3 numbers less than 4 on a cube (1, 2, 3) and 2 options when tossing a coin (heads or tails). The total number of outcomes is 6 for the cube (since it has 6 sides) and 2 for the coin. Therefore, the probability is (3/6) * (1/2) = 1/3.