Homework Help Forum: math

Posted by Katherine on Friday, November 6, 2009 at 3:37pm.

a true or false test has 5 questions. what is the probability of guessing exactly four out of the five answers correstly.

• math - bobpursley, Friday, November 6, 2009 at 3:45pm

  Pr(4/5)= 1/2*1/2*1/2*1/2*1/2 remember, guessing exactly 4 right is guessing the last one wrong also.

  
  

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