## Algebra 2 (1st Edition)

$16\%$
$\text{z-score}=\frac{\text{data item-mean}}{\text{standard deviation}}$ $|\frac{5-4.6}{0.4}|=1$ The normal distribution is symmetric about the mean. Thus, using the 68-95-99.7 rule and the graph we get: $P( x\geq\overline{x}+\sigma)=313.5\%+2.35\%+0.15\%=16\%$