SOLUTION: A true-false test consists of 50 questions. How many does a student have to get right to convince you that he is not merely guessing?

Question 1197381: A true-false test consists of 50 questions. How many does a student have to get right to convince you that he is not merely guessing?
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!

correct answers.
correct answers.
Answers may vary.
In order be convincing, the student would have to answer at least out of questions correctly, since is approximately three standard deviations above the mean.
Answering fewer than questions correctly could happen too often, simply

.
RELATED QUESTIONS
a test consists of 10 true/false questions. If a student guesses on each question, what... (answered by reviewermath)

(1) How many ways can 20 objects be arranged into groups of 5? (order does not matter)... (answered by ikleyn)

A test consists of 10 true and false questions. To pass the test a student must answer at (answered by solver91311)

A test consists of 10 true/false questions. To pass the test a student must answer a... (answered by greenestamps)

A test consists of 10 true/false questions. To pass the test a student must > answer at (answered by jjordan95)

A test consists of 10 true/false questions. To pass the test a student must answer at... (answered by solver91311)

A test consists of 10 true of false questions. To pass the test a student must answer at... (answered by Fombitz)

a test consists of 10 true or false questions to pass the test a student must answer at... (answered by stanbon)

A test consists of 10 true/false questions. To pass the test a student must answer at... (answered by jorel1380)