Posted by anonymous on Saturday, April 27, 2013 at 3:25am.
To get an A grade on the test, you need a total score of more than 16 points. One of the students knows the correct answer to 6 of the 20 questions. The rest she guesses at random by tossing a coin (one toss per question,true if heads and false if tails). What is the chance that she gets an A grade on the test?

maths  FLu, Saturday, April 27, 2013 at 6:01pm
0.0287
Answer This Question
Related Questions
 statistics  To get an A grade on the test, you need a total score of more than ...
 Statistic  To get an A grade on the test, you need a total score of more than ...
 science  To get an A grade on the test, you need a total score of more than 16 ...
 elem alg  On a certain test, the student gets 3 points for each correct answer ...
 Math  On a truefalse test, each question has exactly one correct answer: true...
 Finite  Assume that the test has 5 true/false questions, and 10 multiple choice...
 Algebra  you are about to take a test that contain questions of type A worth 4 ...
 math,correction  can someone correct this for me please. Statistics. Sam must ...
 math correction  can someone correct this for me.or teach me if i'm wrong ...
 math help  I need help solving this math problem, please: Problem: Angela's ...
More Related Questions