If There Are 60 White Marbles And 40 Red Marbles

There are r red b blue marbles and w.

If there are 60 white marbles and 40 red marbles.

In a jar 1 2 of the marbles are red 1 4 are white and 1 5 are blue. Then the total probability is p blue p purple 0 25 0 15 0 40 of picking blue or purple. This is from a sampling of items that were auctioned. Write the ratio of the number of blue mrables to the total of marbles in terms of r b and w 14156989.

Present the results using both the approximate formula and. If you increase the number of blue marbles by 40 how many blue marbles will be in the bag. 50 blue and 30 are green. What fraction of the marbles are neither red white nor blue.

White marbles in a bag. 1 5 8 cobalt and white swirl marble br estimated 300 600 br sold for 130. 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. In a bag of blue green and red marbles.

Then take 25 of 60 60 x 25 15 blue marbles then for the white marbles it s 60 21 15 24 remember that a 100 probability in this case is going to be 60 60. Marbles are part of a wide variety 865 lots of toys trains die cast vehicles and figures that was auctioned live on ebay october 26 2003. 5 blue 3 purple 20 total 0 40. 3 4 black and blue marble br estimated 20 40 br sold for 40.

So i could pick that red marble or that red marble. There are a combined total of 60 marbles in the jar consisting of red green blue and white marbles. An equivalent method is to sum the marble selections first. An urn contains 80 marbles of which 60 are red and 40 are white.

Find a 95 b 99 c 99 73 confidence limits for the actual proportion of red marbles in the urn. There s two red marbles in the bag. So this is all the possible outcomes. So i could pick that green marble or that green marble.

And sometimes this is referred to as the sample space. One third of the marbles are red half the marbles are blue the remaining 1 6 is divided up evenly between the green and white marbles. 6 40 an urn contains red and white marbles in an unknown proportion. 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.

For a probability of 75 75 of the marbles must be blue. There s two green marbles in the bag. A random sample of 60 marbles selected with replacement from the urn showed that 70 were red. And then there s one blue marble in the bag.