Determine the 70th percentile for IQ scores (mu=100, strd de

[srt927]

Determine the 70th percentile for IQ scores (mu=100, strd deviation=15) find the score such that 70% of the scores fall at or below it?

What formulas do I need

 

[galactus]

\(\displaystyle \L\\z=\frac{x-{\mu}}{\sigma}\)