An Unprepared Student Must Take a 7-Question, Multiple-Choice Test That

question 159

Multiple Choice

An unprepared student must take a 7-question, multiple-choice test that has 5 possible answers per question. If the student can eliminate two of the possible answers on the first five questions, and if she guesses on every question, what is the probability that she will answer at least one question correctly? ​

• A)Pr(at least 1 correct) =
• B)Pr(at least 1 correct) =
• C)Pr(at least 1 correct) =
• D)Pr(at least 1 correct) =
• E)Pr(at least 1 correct) =

---

Definitions:

Deception

The act of misleading or deceiving someone by presenting false information or concealing the truth.

Therapy

A treatment intended to relieve or heal a disorder, often involving psychological techniques for mental health issues.

Bayesian Statistics

Statistics that involve a formula for calculating the likelihood of a hypothesis being true and meaningful, taking into account relevant prior knowledge.

Mathematical Statistics

A branch of mathematics dealing with the analysis, interpretation, presentation, and organization of data using statistical theories and methodologies.