# quick simple question on Bernoulli trials?

• Apr 29th 2009, 10:43 AM
arslan
quick simple question on Bernoulli trials?
Determine whether a probability model based on Bernoulli trials can be used to investigate the situation. If not, explain.

A pool of possible jurors consists of 15 men and 18 women. A jury of 12 is picked at random from this group. What is the probability that the jury contains all women?
• Apr 29th 2009, 07:08 PM
mr fantastic
Quote:

Originally Posted by arslan
Determine whether a probability model based on Bernoulli trials can be used to investigate the situation. If not, explain.

A pool of possible jurors consists of 15 men and 18 women. A jury of 12 is picked at random from this group. What is the probability that the jury contains all women?

What is the definition of a Bernoulli tial. Does this situation fit that definition?

$\frac{^{18}C_{12} \cdot ^{15}C_{0}}{^{33}C_{12}}$. Do you see where each bit comes from?
• Apr 30th 2009, 03:02 AM
arslan
no is a bernoulli trial where there are only two possible outcomes