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A true-false test has 4 questions. What is the chance of answering all questions correctly by guessing? Round your answer to the nearest 0.1%, if necessary.

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Solution:

The chance of answering a question correctly in a true or false test is;

[tex]\frac{1}{2}=0.5[/tex]

Thus, the chance of answering all 4 questions correctly is;

[tex]\begin{gathered} (0.5)^4=0.0625 \\ \\ =6.3\text{ \%} \end{gathered}[/tex]

ANSWER: 6.3%

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