A bag contains only red, green, brown and yellow marbles.
The probabilities of selecting each colour are shown below.
The probability of choosing a red marble is the same as choosing a yellow marble.
Colour Red Green Brown Yellow
Probability 0.27 0.07
Find the probability of selecting a brown or yellow marble.
Well, if the probability of choosing a brown marble is 0.07, and the probability of choosing a yellow marble is the same, then we can just add those two probabilities together to find the probability of selecting either a brown or yellow marble.
0.07 + 0.07 = 0.14
So the probability of selecting a brown or yellow marble is 0.14. Just remember, when you're looking for a little color in your life, sometimes you just have to mix things up!
To find the probability of selecting a brown or yellow marble, we need to add the probabilities of selecting a brown marble and a yellow marble.
The probability of selecting a brown marble is 0.07, as given in the table.
The probability of selecting a yellow marble is also 0.07, because it is mentioned that the probability of choosing a red marble is the same as choosing a yellow marble.
Now, adding the two probabilities:
0.07 + 0.07 = 0.14
Therefore, the probability of selecting a brown or yellow marble is 0.14.
To find the probability of selecting a brown or yellow marble, you need to add the probabilities of selecting a brown marble and a yellow marble.
The given probability of selecting a brown marble is 0.07.
The probability of selecting a yellow marble is the same as the probability of selecting a red marble, which is not given. However, since the probability of selecting each color of marble must add up to 1, and the only colors given are green, brown, and yellow, the probability of selecting a green marble is 1 - (0.27 + 0.07) = 0.66.
Therefore, the probability of selecting a brown or yellow marble is computed by adding the probability of selecting a brown marble (0.07) to the probability of selecting a yellow marble (0.07):
P(brown or yellow) = P(brown) + P(yellow) = 0.07 + 0.07 = 0.14
Thus, the probability of selecting a brown or yellow marble is 0.14.
The probabilites must add up to 1
I will assume your "shown below" is:
Prob(red) = .27
prob(green) = .07
It said prob(yellow) equals prob(red), so prob(yellow) = .27
then prob(brown) = x
.27 + .07 + x + .27 = 1
x = .39
prob(brown or yellow) = .39 + .27 = ...