# stats

posted by .

You pick 2 M&Ms from a large bag. What is the probability that 1) at least one is brown? 2) not all are blue?
brown=13%
yellow=14%
red=13%
blue=24%
orange=20%
green=16%

1) P(at least one M&M is brown)
= 1 - P(no M&M is brown)
= 1 - (0.87) = 0.13
Is this correct?

2) P(not all M&Ms are blue)
= 1 - P(all M&Ms are blue)???

• stats -

"1) P(at least one M&M is brown)
= 1 - P(no M&M is brown)
= 1 - (0.87) = 0.13"
is correct for picking one brown.

For picking at least one brown, you can proceed as in the driver's problem, at least one driver ...

In this case, if you pick two, and both of them are NOT brown, the probability is
P(not brown)*P(not brown)
=0.87²
=0.7569
Therefore the probability of choosing AT LEAST one brown is
1 - P(not brown)*P(not brown)
= 0.2431

The probability of choosing all (both) blue is
P(blue)*P(blue)
=0.24*0.24
=0.0576
Therefore the probability of NOT choosing ALL blues
=1-P(blue)*P(blue)
=1-0.0575
=0.9425

## Similar Questions

1. ### art-colors

what are all the different colors that mix to make other colors?
2. ### Algebra

A bag of M&Ms contains 12 red, 11 yellow, 5 green, 6 orange, 5 blue, and 16 brown candies. What is the probability that if you choose 2 M&Ms from the bag (one after the other) without looking, you will choose 2 yellow ones?
3. ### math 4th grade

Ken is about to eat a bag of M&M's on the 4th of July. The number of each color M&M is listed below. Green 11 Red 8 Yellow 13 Tan 7 Brown 10 Blue 5 a)If Ken picks the first M&M out of the bag without looking. What is the chance he …
4. ### Statistics

M&M plain candies come in various colors. According to the M&M/Mars Department of Consumer Affairs, the distribution of colors for plain M&M candies is as follows. Color Purple Yellow Red Orange Green Blue Brown Percentage 18% 19% …
5. ### math

Suppose a bag of marbles has 4 green, 2 red, 5 yellow, 1 brown, and 7 blue marbles. What is the probability of picking a green marble, replacing it, and then picking a brown marble?
6. ### Math

This problem pertains to Cuisenaire Rods: 1-white 2-red 3-green 4-purple 5-yellow 6-dark green 7-black 8-brown 9-blue 10-orange Question: (a) If an all-brown train is equal in length to an all-orange train, what can be said about the …
7. ### STATISTICS

According to Masterfoods, the company that manufactures M&M’s, 12% of peanut M&M’s are brown, 15% are yellow, 12% are red, 23% are blue, 23% are orange and 15% are green. Compute the probability that two randomly selected peanut …
8. ### Statistics

The percentage of various colors are different for the "peanut" variety of M&M's candies, as reported on the Mars, Incorporated website. Brown: 12% Yellow: 15% Red: 12% Blue: 23% Orange: 23% Green: 15% A 14-ounce bag of peanut M&M's …
9. ### math (stats)

According to Masterfoods, the company that manufactures M&M’s, 12% of peanut M&M’s are brown, 15% are yellow, 12% are red, 23% are blue, 23% are orange and 15% are green. [Round your answers to three decimal places, for example: …
10. ### algebra

A bag of marbles contains 5 brown, 6 yellow, 4 blue, 3 green and 2 orange. What is the probability of: a) getting 3 yellow marbles, if 3 are taken at a time?

More Similar Questions