If There Are 60 White Marbles And 40 Red Marbles

Assume each jar has an equal probability of being selected after a.

If there are 60 white marbles and 40 red marbles.

3 4 must be blue if there were 60 blue marbles the probability would be 50 if there were 120 blue marbles it would 66 7 or 2 3 if 1 4 were red and 3 4 were blue then it would 75 1 4x 60 x 240 240 40 is 200 so 200 more blue marbles are needed. Five marbles are white. And then there s one blue marble in the bag. So i could pick that red marble or that red marble.

There s one blue marble. There are three jars that each contain 10 marbles. There are 36 white ones and equal numbers of red and blue. Out of 50 samples of 20 marbles each selected with replacement from the urn how many samples can be expected to consists of a equal numbers of red and white marbles b 12 red and 8 white marbles c 8 red and 12 white marbles d 10 or more white marbles.

And sometimes this is referred to as the sample space. William has 60 marbles that are red white or blue in colour. So i could pick that green marble or that green marble. A jar contains 40 red marbles and 10 black marbles if you take a random sample of one marble from this jar.

So this is all the possible outcomes. For a probability of 75 75 of the marbles must be blue. The first contains 3 white marbles and 7 red marbles the second 6 white and 4 red and the third all 10 white. There s two green marbles in the bag.

Calculate the percentage of his marbles that are blue. There s two red marbles in the bag. An experiment consists of first selecting a jar at random.