True or False
A jar contains 15 red marbles and 75 blue marbles. If you randomly select a marble from this jar, the probability of obtaining a red marble is p = 15/90.
true, but your answer should be reduced to 1/6
True.
To calculate the probability of obtaining a red marble, we divide the number of red marbles by the total number of marbles. In this case, there are 15 red marbles and 75 blue marbles, so the total number of marbles is 15 + 75 = 90.
Therefore, the probability of obtaining a red marble is 15/90, which can be simplified to 1/6.
True.
To calculate the probability of obtaining a red marble, we need to divide the number of red marbles (15) by the total number of marbles in the jar (15 red + 75 blue = 90 marbles).
So, the probability of obtaining a red marble is:
15/90 = 1/6 = 0.1667 (rounded to four decimal places) or 16.67% (rounded to two decimal places).