How many different samples of size n=3 can be obtained from a finite population of size N=9 .
Select one: a. 42 b. 84 c. 21 d.7
Given:
Use the formula for combinations
Substitute the given in each letter, where in this question, given population N is for n in the formula, and the given sample size n is for r in the formula.
Option (b) is correct.
Comments
Leave a comment