In how many ways can a group of 9 people be selected to carry out a research study where all participants will receive the same treatment, within a population of 20 possible participants? a. 167,960 b. 6.09493 c. 38,760 d. 20 e. 670

MATLAB: An Introduction with Applications
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In how many ways can a group of 9 people be selected to carry out a research study where all participants will receive the same treatment, within a population of 20 possible participants?

a. 167,960

b. 6.09493

c. 38,760

d. 20

e. 670

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