Ask Me Help Desk

Ask Me Help Desk (https://www.askmehelpdesk.com/forum.php)
-   Mathematics (https://www.askmehelpdesk.com/forumdisplay.php?f=199)
-   -   Grade 12 probability (https://www.askmehelpdesk.com/showthread.php?t=87057)

  • Apr 27, 2007, 08:51 PM
    jessnic
    grade 12 probability
    A test has 4 multiple choice questions each with 4 selections. Determine the probability of passing the test vy guessing to the nearest thousandth.
  • Apr 28, 2007, 04:09 AM
    galactus
    Hello Jessnic.

    What is considered passing? Getting all 4 questions correct? 3 correct?

    What is the probability of answering onw correctly? There are 4 choices, so 1/4.

    Now, suppose you answer the next one correct; you still have 1 in 4.

    So, the probabiltiy of getting 2 in a row right is (1/4)(1/4). See? Now what's the

    probabiltiy of getting all 4 correct?

  • All times are GMT -7. The time now is 08:39 PM.