Mathematics, 26.06.2020 16:01, adam4449
A recent CBS News survey reported that 64% of adults felt the U. S. Treasury should continue making pennies. Suppose we select a sample of 18 adults. a-1. How many of the 18 would we expect to indicate that the Treasury should continue making pennies
Answers: 2
![\left n} \atop \right. C_3 = \frac{n! }{[n-3] ! 3!}](/tpl/images/0694/9016/e7c41.png)
![\left n} \atop \right. C_3 = \frac{18! }{[15] ! 3!}](/tpl/images/0694/9016/441e1.png)
![\left n} \atop \right. C_3 = \frac{18 * 17 * 16 * 15! }{[15] ! (3 *2 *1 )}](/tpl/images/0694/9016/c89f7.png)
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