Thursday

July 24, 2014

July 24, 2014

Posted by **Morgan** on Wednesday, March 16, 2011 at 12:17am.

I have the answers but do not know how to get them. I'm trying to use a tree diagram but I am confusing myself.

- Stats (probability) -
**PsyDAG**, Wednesday, March 16, 2011 at 12:14pm(i) Choosing the first girl with blue eyes = 3/10. Since there is no replacement, the probability of the second girl having blue eyes = 2/9. The probability of both/all occurring is found by multiplying the individual probabilities.

(ii) Do similar process with non-blue probabilities.

(iii) This is either one or two have blue eyes. You have probability of two from (i). Probability of one = 3/10 * 7/9 or 7/10 * 3/9. (note that they have the same product). Either-or probability is found by adding the individual probabilities.

**Related Questions**

Stats - The probability that a person has blue eyes is 16%. Three unrelated ...

statistics & probability - according to a survey, 30% of 18-25 year olds have ...

Statistics - For the gene pair that determines eye color, each gene trait may be...

Stats - About 35% of the population has blue eyes (based on a study at Indiana ...

MATH - If 20% of population have blue eyes, and 5 people are selected at random...

Math - In Janis class, half of the students are girls and 60% of the students ...

Stat college - It is estimated that 17% of americans have blue eyes. A random ...

STAT - it is estimated that 17% of americans have blue eyes. A random sample of ...

math - There are x students in Mrs. Schwartz's third-grade class. One less than ...

stat - it is estimated that 17% of americans have blue eyes. A random sample of ...