Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

Login

Username

Password

Not registered yet?

#1 2012-10-03 23:33:44

cassrl
Novice

Offline

statistics

Top 12% of the class will an A.  Mean grade is 72 and the standard deviation is 10.  What grade would you need to earn an A?

#2 2012-10-04 00:41:03

bobbym
Administrator

Offline

Re: statistics

Hi;


In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.

Board footer

Powered by FluxBB