Posted by **may ann** on Friday, June 6, 2014 at 9:39pm.

1. A bag contains red, blue, green, and yellow marbles. Seth takes a marble from the bag without looking, records the color of the marble, and then puts the marble back in the bag. He repeats the process until he has recorded the colors of 35 marbles. The chart below shows the results of his experiment.

outcome: red blue green yellow

frequency:10 5 13 7

Use the results of this experiment to find each probability. Write each answer as a fraction in lowest terms.

a. Find the experimental probability that the next marble he chooses is yellow.

b. Find the experimental probability that the next marble he chooses is either blue or red.

- math help -
**MathMate**, Saturday, June 7, 2014 at 9:09am
Experimental probability

=(observed frequency)/size of sample space

which leads to

P(red)=10/35=2/7

P(blue)=5/35=1/7

... etc

also, since these probabilities are complementary, we can conclude that P(blue or red)=P(blue)+P(red)

Try to work out the numbers and post for checking if you wish.

## Answer this Question

## Related Questions

- Math - 1. A bag contains red, blue, green, and yellow marbles. Seth takes a ...
- 8th Grade Algebra - Tim and Sasha have a bag containing 7 red marbles, 3 blue ...
- Maths - A bag contains 10 red marbles, 10 green marbles, 10 yellow marbles and ...
- math - a bag contains 20 marbles containing 8 green, 4 red, 2 blue, 6 yellow. If...
- statistics - A bag contains a total of 24 white, red, and blue marbles. A ...
- Math - A bag contains nine red marbles, four green marbles, three blue marbles, ...
- Math - A bag contains 2 red, 2 blue, and 2 green marbles, Sue takes one marble ...
- math - a bag contains 5 blue marbles 4 red marbles and 1 green marble. what is ...
- math - rene put 2 blue marbles, 2 green marbles, 2 red marbles and 2 white ...
- Math help! - A bag contains 9 blue marbles and 1 green marble. What is the ...

More Related Questions