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Posted by on Monday, November 14, 2011 at 2:32pm.

A student took a 25 question true and false test answering the question randomly without reading. If a score of 18 is correct is the minimum passing graade, how likely is it that the random guesser will pass the test?

This is binomial although there is a slight twist in the Q

  • statistics - , Monday, November 14, 2011 at 6:02pm

    You can use a binomial probability table to determine the probability. Find P(18) through P(25), then add all the probabilities together for a total.

  • statistics - , Tuesday, November 15, 2011 at 10:34am


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