Thursday
December 18, 2014

Homework Help: Math/Prob

Posted by Ben on Wednesday, May 23, 2012 at 3:08pm.

Claire takes a five-question true-false test. She hasn't studied, so she guesses at random. With her ESP she figures she has a 60% probability of getting any one answer wrong.

A. What is the probability of getting an answer wrong? (Do you think they want me to ignore the ESP nugget or take it into account?)
b. Let P(x) be the probability of getting exactly x of the five answers right. Calculate p(0) through P(5)
c. What is the probability of getting at least three answers right.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Math - On a true-false test, each question has exactly one correct answer: true...
Statistics - Please help. Find the probability of getting 2 hearts if the cards ...
Stats - A test has 15 true or false questions and 10 multiple choice questions (...
MATH Prob. - Find the probability of correctly answering the first 4 questions ...
MATH Prob. - Find the probability of correctly answering the first 4 questions ...
PROBABILITY MATH - An unprepared student makes random guesses for the ten true-...
maths - To get an A grade on the test, you need a total score of more than 16 ...
MATH Prob. - Jack is taking a four-item true–false test. He has no knowledge ...
Maths - A true/ false test is given. If a person guesses the answers, the ...
statistics - a test consists of true/false questions .to pass the test a student...

Search
Members