-a distribution of a variable that has two outcomes when sampling is done without replacement.Given a population with only two types of objects (females and males, defectives and non-defectives, success or failures, etc.) such that there are a items of one kind and b items of another kind and a+b equals the total population, the probability P(X) of selecting without replacement a sample size n with X items of types a and n-X items of type b is
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Example 1: Antique National School Senior Girl Scout had planned about their first camping activity. Fifteen girls wanted to have their first encampment beside the beach while sixteen preferred to have it on the mountains. On the day of the encampment attended by 20 girl scouts, find the probability that exactly 7 members wanted their first camping activity on the beach.
Assigning the values to the variables given
a = 15 n= 20
b = 16 X= 7
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By: Marie Louissie Ynez U. Lavega
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