A dating service finds that 35% of the couples that it matches eventually get married. In the next 150 matches that the service makes, find the probability that at least 20 couples get married.
this is the first time i come across this kind of question...i dun know thw way to handle it.....can anyone possibly help??
Thx in advance.
but how can i calculate the answers by calculator??
the formula is so long...
is there any other way which can solve the question simply?
Originally Posted by littleprince327
Binomial Distribution: Probability Calculator
there are all kinds of calculators out there
Your instructor most likely wants you to use the normal approximation to the binomial distribution.
That's a central limit theorem that was proved by Gauss.