Answer:
P(not choose a blue marble) = 28/45 = 0.622
Step-by-step explanation:
The probability that an event of a total of possible probable cases will occur is equal to the ratio between the number of occurrences of said event (favorable cases) and the total number of possible cases. It is given by the equation:
P(A) = number of favorable outcomes/total number of outcomes
The bags contain 12 red marbles, 11 green marbles, 17 blue marbles and 5 yellow marbles. So, the total number of marbles is:
Total number of marbles = 12 + 11 + 17 + 5 = 45 (This is the total number of outcomes)
For this case, we want to know the probability that you won't choose a blue marble. So, we have to subtract the number of blue marbles from the total number of marbles:
Total number of marbles - number of blue marbels = 45 - 17 = 28 (number of favorables outcome)
The probability that you won't choose a blue marble is:
P(not choose a blue marble) = 28/45 = 0.622 or 62.2%
