My Math Forum (http://mymathforum.com/math-forums.php)
-   Probability and Statistics (http://mymathforum.com/probability-statistics/)
-   -   Is there a correct choice/letter in the problem? (http://mymathforum.com/probability-statistics/343773-there-correct-choice-letter-problem.html)

 MIIF March 28th, 2018 08:23 PM

Is there a correct choice/letter in the problem?

https://image.ibb.co/eR21qS/IMG_20180329_121716.png

 MIIF March 28th, 2018 08:38 PM

I tried to answer it and got 3/4 or 6/8 after using the union set operation for 4/8 or 1/2 and 3/8, based on what is being asked in the problem. https://www.mathplanet.com/education...lity-of-events

 JeffM1 March 28th, 2018 10:32 PM

Well I am with you.

P(even) = 4/8

P(less than 4) = 3/8

P(even and less than 4) = P(2) = 1/8

P(even or less than 4) = P(even) + P(less than 4) - P(even and less than 4) =

4/8 + 3/8 - 1/8 = 6/8 = 3/4.

 Denis March 29th, 2018 05:15 AM

Same as: what is probability that it does not end up on 5 or 7?

 All times are GMT -8. The time now is 11:20 PM.