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Thread: Need some math HW help (More multiple choice packets)

  1. #11
    trix's Avatar
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    Listed below are the test scores from Mrs. Cather's math test. What percent of students scored below the class average?
    68, 92, 88, 70, 82, 99, 88, 77, 85, 93, 84, 98, 89, 86, 77, 87, 90
    A. 7%
    B. 39%
    C. 42%
    D. 46%

    C lol i get it now



    Shelly needs at least a 95% average in her English class to be nominated for the English award. Listed below are her scores. What does she need to score on her last essay in order to average a 95% in her English class?

    Test: 99%
    Essay: 94%
    Test: 96%
    Essay: 98%
    Test: 93%
    Essay: ?

    A. 86%
    B. 90%
    C. 93%
    D. 94%

    B
    Last edited by trix; 04-23-2012 at 03:32 PM.

  2. #12
    Sari's Avatar
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    Quote Originally Posted by Aerandria View Post
    :o figured out what I was doing wrong. Answer is C
    Can you explain that one? I don't know what I'm doing wrong

  3. #13
    trix's Avatar
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    @(you need an account to see links)

    A to the one you just posted, definitely. Answer's 58

    @(you need an account to see links)
    Last edited by trix; 04-23-2012 at 03:33 PM.

  4. #14
    Ana's Avatar
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    Are you checking that all of the numbers are entered in correctly? It's a long list. That's what I did wrong.

    When you enter it into here: (you need an account to see links)
    The mean is 85.47059

    There are 7 scores under that number, which is about 42%

  5. #15
    Sari's Avatar
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    You're counting the 85 as below that?
    I entered the numbers right.

  6. #16
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    Yeah. I also checked not counting 85, but 35% isn't on the list.

  7. #17
    Sari's Avatar
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    Quote Originally Posted by trix View Post
    @(you need an account to see links)

    A to the one you just posted, definitely
    Yeah it's A. I'm just an idiot.

    ---------- Post added at 03:34 PM ---------- Previous post was at 03:33 PM ----------

    I don't like that problem -__-
    I'd round it down to 85 and 85 isn't under 85. And 41% isn't on the list either. I mean it's close to 42, but you'd still round down to 41.
    lol

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