## Algebra 2 (1st Edition)

Published by McDougal Littell

# Chapter 10 Counting Methods and Probability - 10.6 Construct and Interpret Binomial Distributions - 10.6 Exercises - Skill Practice - Page 728: 18

#### Answer

$8.6736173799×10^{−19}$

#### Work Step by Step

The chance of doing a specific problem correctly by guessing is $1/4$ Then, the number of ways to choose which ones are correct is dictated by $_{30}C_n$ where n is the number of correct OR incorrect (it doesn't matter because they will add up to 30 either way. $$_{30}C_0*(1/4)^{30}=\boxed{8.6736173799×10^{−19} }$$

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