A score that is 6 points below the mean corresponds to a z-score of z = 22.00. What is the population standard deviation?

Standard deviation is a measure of how spread out of numbers are:

Step-by-step explanation:

a score that is 6 points below the mean corresponds to a z score of z= 22 than the population standard deviation will be

z = (distance from mean)/(standard deviation)

22 = 6/s

s = 6/22

s=0.272

The population standard deviation deviation is 0.272

While you were copying the question, you jumped from one "round" to the next one, and you left out the part that says " , then how many round" .  (We also know that you didn't proof-read your question before you posted it, but that problem belongs in the <English> category, not in <Math>.)

582 / 17 = 34.235

If he scores exactly 17 points each round, then after 34 rounds he has 578 points.  That's close, but not quite enough.  He has to play one more round.

All together . . . 35 rounds.  Then he has  595 points.  He beat his old score, so he can quit now and go do his math homework.  He has become a true Victor !