Question

the average score on the sat in idaho is 1005 with a standard deviation of 182, what score would you need to score above the 75% percentile?

Answer 1

• 1128 or more

Explanation:

According to the z-score table 75% or 0.75 is corresponding to 0.674.

It means the value of 75% percentile is 0.674 times standard deviation more than the mean

• 1005 + 182*0.674 = 1128 (rounded up)

Thus you should score 1128 or more