The probability that the next 4 winners will all be seventh grade students can be calculated as the probability of selecting a seventh grade student from the bag 4 times in a row.
The probability of selecting a seventh grade student from the bag is 3/4 (3 red marbles out of 4 total marbles).
Therefore, the probability of selecting a seventh grade student 4 times in a row is:
(3/4) * (3/4) * (3/4) * (3/4) = (81/256)
So, according to Mona's model, the probability that the next 4 winners will all be seventh grade students is StartFraction 81 over 256 EndFraction.
Twelve of the last 16 winners of the school science fair have been seventh grade students. Mona placed 3 red marbles and 1 green marble in a bag to create a simulation to predict whether future science fair winners will be seventh graders.
According to Mona’s model, what is the probability that the next 4 winners will all be seventh grade students?
StartFraction 3 over 16 EndFraction
StartFraction 81 over 256 EndFraction
Three-fourths
1 answer