In a large university, 15% of the students are female. If a random sample of twenty students is selected,
d.what is the probability that the sample will contain more than nine female students?
The formula I know is n!/x!(n-x)!.
But would like to know how to best calculate on my scientific calculator which we can use during the test.
Easy for me to calculate nCr here: 12C3=4845
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