MathsGee is Zero-Rated (You do not need data to access) on: Telkom |Dimension Data | Rain | MWEB

0 like 0 dislike
13 views
Suppose $X$ is $\mathrm{N}\left(\mu, \sigma^{2}\right)$. For $a=1,2,3$ find $P(|X-\mu|<a \sigma)$.
| 13 views

0 like 0 dislike
$P(|X-\mu|<a \sigma)=P(-a<Z<a)=2 \Phi(a)-1$ so the required values are approximately $0.682,0.954$ and $0.998$ respectively.
by Diamond (74,866 points)

0 like 0 dislike