Chapter 10 Counting Methods and Probability - 10.6 Construct and Interpret Binomial Distributions - 10.6 Exercises - Skill Practice - Page 728: 15

0.120134353638

Work Step by Step

The general formula for the distribution of the heads and tails should be found. The chance of having any specific side of the coin is $1/2$ and the way to choose n heads is $_{20}C_n$. $$_{20}C_{12}*(1/2)^{20}=\boxed{0.120134353638}$$

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