Answer
ii) $P(x \leq 245) = 0.095$
Work Step by Step
$\mu$ = 266, $\sigma$ = 16
Want to find $P( x \leq 245 )$
i) Convert 245 to a z-score:
z = $\frac{x - \mu}{\sigma}$
z = $\frac{245 - 266}{16}$
z= -1.31
ii) $P(x \leq 245) = P(z < -1.31) = 0.095$
