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March 26, 2017

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the final exam in a course will count as 30% of the total. prior to the final exam, 245 points are possible. how many points will the final exam be worth?

  • algebra - ,

    0.3 * 245 = ?

  • algebra - ,

    I read that differently
    "prior to the final exam, 245 points are possible" appears to imply that 245 points is 70% of the total

    so total = 245/.7 = 350

    so the final is worth 350-245 or 105 points

    (check: 105/350 = .3 = 30%)

  • algebra - ,

    On a recent math exam, Alex received a score of 92%. His z-score is positive 2. If the mean for the exam is 84, what is the standard deviation?

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