Monday

March 30, 2015

March 30, 2015

Posted by **Anonymous** on Monday, January 19, 2009 at 9:08pm.

please check my answer

a) explain these events are either dependent or independent.

i think this is independent because the coach just randomly chooses the ball.

b) what is the propability both of the balls will be the ame design color?

is it 98/15.....

- math -
**Reiny**, Monday, January 19, 2009 at 9:33pmSince probability is a value between zero and 1, you should have realized immediately that your answer made no sense.

prob of 2 black balls = 8/15 * 7/14 = 56/210

prob of 2 red balls = 7/15 * 6/15 = 42/210

so the prob of either 2 black OR 2 red balls = 98/210 = 7/15

(notice that the only other possibility would have been to have a black and then a red which would be

2(8/15 / 7/14) = 8/15

and 7/15 + 8/15 = 1 )

**Answer this Question**

**Related Questions**

algebra...urgent help - A bag soccer balls contains 8 balls with black design ...

Maths - Bag A contains 2 white, 1 black and 3 red balls, Bag B contains 3 white...

Math - A bag contains three black balls, four white balls and five red balls. ...

MATH 12 HELP! - One bag contains 4 white balls and 6 black balls. Another bag ...

Math - A bag contains 33 balls: 10 blue, 11 red, and 12 green. If a person will ...

Math - A bag contains 33 balls: 10 blue 11 red and 12 green If a person will ...

IT/210 CheckPoint Iteration Control Structure - Need help with this! Uses a ...

Statistics HELP - There are two bags each containing red balls and yellow balls...

Math - A bag contains 5 red balls and 4 white balls. Two balls are drawn at ...

Math - A bag contains 5red balls and 4 white balls. Two balls are drawn at ...