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

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