Answer
The probability that a team wins by 5 or more points relative to the spread is 0.3228.
Work Step by Step
$\mu$ = 0, $\sigma$ = 10.9
Want to find $P( x \geq 5 )$
i) Convert 5 to a z-score:
z = $\frac{x - \mu}{\sigma}$
z = $\frac{5 - 0}{10.9}$
z= 0.46
ii) $P(x \geq 5)$
= P(z > 0.46)
= 1 - P( z < 0.46)
= 1-0.6772
= 0.3228
