Question

You have a jar of marbles with 7 red, 12 blue, 6 yellow, and 9 white. What is the probability of selecting a marble that is not red, replacing it and then one that
is white?​

Answer 1

Answer:

The probability of selecting a marble that is not red, replacing it and then one that  is white is 0.2102

Step-by-step explanation:

Number of red marbles = 7

Number of blue marbles = 12

Number of yellow marbles = 6

Number of white marbles = 9

Total marbles = 7+12+6+9=34

Probability of selecting red marble =$\frac{7}{34}$

Probability of selecting no red marble = $1-\frac{7}{34}=\frac{27}{34}$

Now replacing it one marble is drawn again

So, Probability of getting white marble $=\frac{9}{34}$

So,the probability of selecting a marble that is not red, replacing it and then one that  is white =$\frac{27}{34} \times \frac{9}{34}=0.2102$

Hence the probability of selecting a marble that is not red, replacing it and then one that  is white is 0.2102