Normal density plot shading between specifications

plots the standard normal density, shading the portion inside the specification
limits given by the two-element vector `p`

= normspec(`specs`

)`specs`

, and returns the
probability `p`

of the shaded area. If `spec`

has
no lower limit, then set `specs(1)`

to `–Inf`

; if
`spec`

has no upper limit, then set `specs(2)`

to `Inf`

.

`[`

also returns a column vector of chart line objects using any of the input arguments
in the previous syntaxes. Use `p`

,`h`

] = normspec(___)`h`

to modify properties of a
specific chart line after you create it. For a list of properties, see Line Properties.