Posted by **paul** on Saturday, October 9, 2010 at 12:29pm.

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 -
**Ms. Sue**, Saturday, October 9, 2010 at 12:31pm
0.3 * 245 = ?

- algebra -
**Reiny**, Saturday, October 9, 2010 at 1:24pm
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 -
**Anonymous**, Tuesday, April 24, 2012 at 5:26pm
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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