SOLUTION: An English class consists of 12 male and 18 female students. Three of the male students and five of the female students are non-bumiputras. A student is randomly selected. Find the

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Question 1157158: An English class consists of 12 male and 18 female students. Three of the male students and five of the female students are non-bumiputras. A student is randomly selected. Find the
iii. Probability of selecting either a male or a non-bumiputra student.


i.Probability of selecting a male student given that the student is a nonbumiputra.
(3/12 + 5/18) = 8/30 = 4/15 [Is this right? I dont know if I do in right way]
ii. Probability of selecting a male student given that the student is a nonbumiputra
(3+5) = 8 = 3/8 [Is this right? I confused if Im doing in right way or not]
Answer by ikleyn(52776) About Me  (Show Source):
You can put this solution on YOUR website!
.

            I will answer part  (iii)  only. 


The class consists of 12 male    = 3 non-B + 9 other male


                 and  18 females = 5 non-B + 13 other females.


The probability of selecting either a male or a non-B student = %2812+%2B+5%29%2F%2812+%2B+18%29 = 17%2F30.    ANSWER

Solved.

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The formulas and the presentation itself are  SELF-EXPLANATORY,  i.e.  do not require additional explanations.

The presentation itself is extremely compact and clear,  making any additional words unnecessary.

Please post me,  WHAT  DO  you  THINK  about it.    Is it clear to you ?

I hope that after reading this post, you will tackle such problems as 2 x 2 = 4.