If the probability that a person is not a swimmer is 0.3, then the probability that out of 5 persons 4 are swimmers is
If the probability that a person is not a swimmer is 0.3, then the probability that out of 5 persons 4 are swimmers is
Official Solution
VVidaara Team
✓ Verified solution
NCERT & Exemplar
Here, $\bar p = 0.3 \Rightarrow p = 0.7$ and $q = 0.3,n = 5$ and $r = 4$
$\therefore$ Required probability ${ = ^5}{C_4}{(0.7)^4}(0.3)$
Community Answers (0)
Log in to post your own answer or join the discussion.
No comments yet — start the discussion.