7) = 0.00316...--------------------------------------…Now, if you are interested in learning,......
Pr(all female jury) = C(15, 7)/C(30, 7) = 0.00316...
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Now, if you are interested in learning, you will investigate the topic in your textbook and read the websites below (there are lots more, this is just a sample)
Else you will turn in this number and walk away. Sorry, I expect you to do the latter.
That's picking with no replacement. I forget the proper calculation, but I think
15/30*14/29*13/28*12/27*11/26*10/25*9/… =~ 0.316%
Chance of picking the first as a woman = no. of women in the pool / no. of people in the pool = 15/30 = 0.5
Chance of picking the next = no. of women left / no of people left = 14/29
etc.
Does the question assume that the jury pool is like an urn full of balls, or are you supposed to make some attempt to model an actual jury selection process?
If the former, then it's 15/30*14/29* ... *9/24 = ?
