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In: Statistics and Probability

A​ true/false test has 30 questions. A passing grade is 78​% or more correct answers. a....

A​ true/false test has 30 questions. A passing grade is 78​% or more correct answers.

a. What is the probability that a person will guess correctly on one​ true/false question?

b. What is the probability that a person will guess incorrectly on one​ question?

c. Find the approximate probability that a person who is just guessing will pass the test.

d. If a similar test were given with​ multiple-choice questions with four choices for each​ question, would the approximate probability of passing the test by guessing be higher or lower than the approximate probability of passing the​ true/false test?​ Why?

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orchestra answered 2 years ago
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