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Chapter 7: Q34. (page 348)

A multiple choice question on a test has 4 answer choices. You guess at the answer. What is the probability that you will select the correct choice? Write your answer as a percent.

Short Answer

Expert verified

The probability of selecting correct choice is 25%.

Step by step solution

01

Step 1. Given Information.

A multiple choice question on a test has 4 answer choices.

02

Step 2. Formula used.

Probability:

P=favorable鈥�outcomestotal鈥�outcomes

03

Step 3. Find the probability of selecting correct choice.

To calculate the probability of selecting correct choice, there are 4 possible outcomes, and outcome is favorable.

P辞蹿鈥塻别濒别肠迟颈苍驳鈥刢辞谤谤别肠迟鈥刢丑辞颈肠别=蹿补惫辞谤补产濒别鈥夆赌刼耻迟肠辞尘别迟辞迟补濒鈥夆赌刼耻迟肠辞尘别=14

Therefore, the probability of selecting correct choice is 14.

04

Step 4. Convert the obtained fraction form into percent.

Multiply 14 by 100% to convert the fraction form in percent.

P辞蹿鈥塻别濒别肠迟颈苍驳鈥刢辞谤谤别肠迟鈥刢丑辞颈肠别=14脳100%=25%

05

Step 5. Conclusion.

The probability of selecting correct choice is 25%.

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Most popular questions from this chapter

Write the percent as a fraction.

18%

An 18th century Indian version of chess uses a 10 square by 10 square board. On the board shown, the dots represent your opponent鈥檚 chess pieces at the start of the game.

  1. Copy the board shown. Mark X鈥檚 on your side of the board to represent your chess pieces in an arrangement that matches your opponent鈥檚.
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