Friday

January 30, 2015

January 30, 2015

Posted by **Sabina** on Monday, May 25, 2009 at 9:37am.

1. You randomly select a B. You replace it. Then you choose a T. Tell whether the events are independent or dependent. Then find the probability that both events occur.

2. You randomly pick an I. Then without replacing the first I, you pick another I. Tell whether the events are independent or dependent. Then find the probability that both events occur.

I know that the first one is independent, and the second is dependent. But I don't get how to solve the second part. PLEASE help! Thanks..

- Math -
**Reiny**, Monday, May 25, 2009 at 10:38amin the first, the prob of getting the B is 2/13, replacing that and then picking a T has a prob of 1/13

so the prob of picking a B, followed by the T is

(2/13)(1/13) = 2/169

in the second you are not replacing the letter so for the second prob. there are only 12 letters left

so Prob. of an I, then the second I is (3/13)(2/12) = 1/26

**Answer this Question**

**Related Questions**

8th grade Math - Khalid uses Penelope’s bag of letter tiles to create a ...

math - You randomly draw letter tiles from a bag containing the letters from the...

8th grade Math - Penelope created a game using a bag of 26 tiles, each with a ...

math - 1. There are 13 horses running in a race. In how many different ways can ...

math - the letters elementary are placed in a bag. one letter is randomly ...

math - Robert has three boxes of letters: The first box contains the six letters...

Math - If a license plate has 3 letters and then 3 numbers, what are the chances...

Statistics - 5.22) A survey of employees at a large company found the following ...

Math Word Problem - Ron is tiling a countertop. He needs to place 54 square ...

Statistics - *Give all probabilities to two decimal places. Three daily ...